Bruno D. Zumbo, Ph.D., Professor & Distinguished University Scholar

Paragon UBC Professor of Psychometrics & Measurement
Measurement, Evaluation, & Research Methodology Program, Dept. of ECPS

Additional Professional Affiliations: Institute of Applied Mathematics, UBC

THE UNIVERSITY OF BRITISH COLUMBIA

Summary from 1987

Updated: September 1, 2017



Description of Research Interests:
Broadly speaking I am a measurement theorist, statistician, and applied mathematician. Over the last 25 years my interdisciplinary program of research has emerged to have broad interdisciplinary impact and as such is well-recognized in a variety of disciplines including psychology, applied social science research (quality of life and well being), assessment, educational research, language testing, health and human development. My research has branched to many areas in statistics, measurement, and scientific methodology. I take a problem-solving point of view for my research in that the research is not tied to any area of statistics or measurement and I learn new things (e.g., new areas of mathematics or new areas of philosophy) as necessary to solve a new scientific problem.  As is evident from my publications, my program of research has elements of working at the foundations of my discipline, including philosophy of science, scientific methodology, and the intersection of measurement and statistical science. The applied work, in the end, feeds by basic program of research in research methodology and measurement. My scholarly life is driven by an immense curiosity and desire to learn, as well as a great deal of energy and committment to learning, knowledge translation and dissemination.



Summary of Scholarly Work

Total Number of Publications:           338

Journal Articles:

218

Books:

5

Edited Books/Volumes:

7

Chapters & Encyclopedia Entries:

60

Conference Proceedings:

10

  Conference Abstracts:

  5

Reviews:

2

Non-refereed Publications:

31


Total Number of Presentations:         429 

Invited Presentations:

153

Self-initiated Refereed Conference Presentations:

276

 

ResearchGate Profile: click here


Google Scholar Profile -- Scholarly Impact Analysis (quantitative metrics): click here to view



Grants, Contracts, & Commissions:
Primary Agencies:  Social Sciences and Humanities Research Council of Canada (SSHRC), Canadian Institutes for Health Research (CIHR), Canadian Forces Department of National Defence (CF  DND), B.C. Medical Health Services, Michael Smith Foundation for Health Research.

Principal or Co-Investigator, since 2000 at UBC:   $2.4 Million  
Career total as Principal or Co-Investigator:    $3.4 Million


Honors and Awards  



Videos of Invited Addresses by Year



Zumbo, B.D. (2015, November). Tides, Rips, and Eerie Calm at the Confluence of Data Uses, Consequences, and Validity. Plenary address, ‘The Production of Data in International Assessments’, Research Conference organised by the Laboratory of International Assessment Studies, Economic and Social Research Council
(ESRC), University of East Anglia, Norwich, UK.   [https://youtu.be/ahfbnLgUR5E]   Click here for the Abstract / Summary.

Zumbo, B.D. (2015, November). Consequences, Side Effects and the Ecology of Testing: Keys to Considering Assessment 'In Vivo'. Keynote address, the annual meeting of the Association for Educational Assessment - Europe (AEA-Europe), Glasgow, Scotland.  [https://youtu.be/0L6Lr2BzuSQ]  


List of Publications by Year

in press


Alkhalaf, A.A., & Zumbo, B.D. (in press). Impact of Predictor Variable(s) with Skewed Cell probabilities on Wald tests in Binary Logistic Regression. Journal of Modern Applied Statistical Methods.

Astivia, O.L.O., & Zumbo, B.D. (in press). Population Models and Simulation Methods: The Case of the Spearman Rank Correlation. British Journal of Mathematical and Statistical Psychology.

Wu, A.D., Zumbo, B.D. (in press). Using Pratt's Importance Measures in Confirmatory Factor Analyses. Journal of Modern Applied Statistical Methods.

Sawatzky, R., Russell, L. B., Sajobi. T. T., Lix. L. M., Kopec, J. A., & Zumbo, B. D. (in press). The use of latent variable mixture models to identify invariant items in test construction. Quality of Life Research.

Zumbo, B.D. (in press). Parameter Invariance. In B. Frey (Ed.), The SAGE Encyclopedia of Educational Research, Measurement and Evaluation. Thousand Oaks, CA: Sage Publications.

Jitlina, K., Zumbo, B.D., Mirenda, P., Ford, L., Bennett, T., Georgiades, S., Waddell, C., Smith, I.M., Volden, J., Duku, E., Zwaigenbaum, L., Szatmari, P., Vaillancourt, T., & Elsabbagh, M. (in press). Psychometric properties of the Spence Children's Anxiety Scale - Parent Report in children with autism spectrum disorder. Journal of Autism and Developmental Disorders

Windt, J. Zumbo, B.D., Sporer, B., MacDonald, K., & Gabbett, T.J. (in press). Why do workload spikes cause injuries, and which athletes are at higher risk? Deciphering mediators and moderators in workload—injury investigations. British Journal of Sports Medicine.

Sawatzky, R., Chan, E.K.H., Zumbo, B.D., Ahmed, S., Bartlett, S., Bingham, C., Gardner, W., Jutai, J., Kuspinar, A., Sajobi, T., & Lix, L.M. (in press). Modern perspectives of measurement validation emphasize justification of inferences based on patient reported outcome scores. Journal of Clinical Epidemiology.

Windt, J., Ekstrand, J., Khan, K. M., McCall, A., & Zumbo, B.D. (in press). Does Player Unavailability Affect Football Teams’ Match Physical Outputs? A Two-Season Study of the UEFA Champions League. Journal of Science and Medicine in Sport.

2017


Wu, A.D., Stone, J.E., Liu, Y., Zou, D., & Zumbo, B.D. (2017). Is Difference in Measurement Outcome between Groups Differential Responding, Bias or Disparity? A Methodology for Detecting Bias and Impact from an Attributional Stance. Frontiers in Education, Section: Assessment, Testing and Applied Measurement, 2:39, pp. 1-12.  doi: 10.3389/feduc.2017.00039 

Gadermann, A.M., Sawatzky, R., Palepu, A., Hubley, A.M., Zumbo, B.D., Aubry T., Farrell, S., Hwang, S.W. (2017). Minimal impact of response shift for SF-12 mental and physical health status in homeless and vulnerably housed individuals: An item-level multi-group analysis. Quality of Life Research, 26, 1463 – 1472. DOI 10.1007/s11136-016-1464-6

Zumbo, B. D., & Hubley, A.M. (Eds.). (2017). Understanding and Investigating Response Processes in Validation Research. New York, NY: Springer.      For information about the book at Springer Press' website please click http://www.springer.com/us/book/9783319561288.
       
    Chapters I authored or co-authored in the edited book by Zumbo & Hubley (2017):
Zumbo, B.D., & Michalos, A.C. (2017). Michalos-Zumbo Well-Being Index. InB A.C. Michalos, Development of Quality of Life Theory and Its Instruments (pp. 341-346). New York, NY: Springer.

Michalos, A.C.,  Zumbo, B.D. (2017). British Columbians’ Expectations and Attitudes Going into the Third Millennium. In A.C. Michalos, Development of Quality of Life Theory and Its Instruments (pp. 157-174). New York, NY: Springer.

McEwan D, Ruissen GR, Eys MA, Zumbo, BD, Beauchamp MR (2017) The Effectiveness of Teamwork Training on Teamwork Behaviors and Team Performance: A Systematic Review and Meta-Analysis of Controlled Interventions. PLoS ONE, 12(1), 1-23. http://dx.doi.org/10.1371/journal.pone.0169604

2016


Zumbo, B.D., & Kroc, E. (2016).  Some Remarks on Rao and Lovric’s Testing the Point Null Hypothesis of a Normal Mean and the Truth: 21st Century Perspective. Journal of Modern Applied Statistical Methods, 15, 33-40. doi: 10.22237/jmasm/1478001780.  For reprint click here.

Zumbo, B.D., & Hubley, A.M. (2016). Bringing Consequences and Side Effects of Testing and Assessment to the Foreground. Assessment in Education: Principles, Policy & Practice, 23, 299–303.  [Available for download at http://dx.doi.org/10.1080/0969594X.2016.1141169]

Zumbo, B.D. (2016). Standard-setting methodology: Establishing performance standards and setting cut scores to assist score interpretation. Applied Physiology, Nutrition, and Metabolism, vol. 41, (Number, 6; Suppl. 2), S74-S82.  [Available for download: here or journal website]

Liu, Y., Zumbo, B.D., Gustafson, P., Huang, Y., Kroc, E., & Wu, A.D. (2016). Investigating Causal DIF via Propensity Score Methods. Practical Assessment, Research & Evaluation, 21(13), 1-24.   URL: http://pareonline.net/getvn.asp?v=21&n=13.

Stone, J., & Zumbo, B.D. (2016). Validity as a Pragmatist Project: A Global Concern with Local Application. In Vahid Aryadoust, and Janna Fox (Eds.), Trends in Language Assessment Research and Practice (pp. 555-573). Newcastle: Cambridge Scholars Publishing.  [Available for download at: http://brunozumbo.com/wp-content/uploads/2016/12/Stone_Zumbo_2016.pdf]

Sawatzky R., Ratner P.A., Kopec J.A., Wu A.D., & Zumbo, B.D. (2016). The Accuracy of Computerized Adaptive Testing in Heterogeneous Populations: A Mixture Item-Response Theory Analysis. PLoS ONE, 11(3), 1-16.    [Available for download at: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150563]   

Dowd, A. J., Chen, M. Y., Schmader T., Jung, M.E. Zumbo, B.D., & Beauchamp, M.R. (2016). Psychosocial Predictors of Changes in Adolescent Girls’ Physical Activity and Dietary Behaviors Over the Course of the ‘Go Girls!’ Group-based Mentoring Program. Health Education Research, 31, 478-491.  doi: 10.1093/her/cyw021.

McEwan, D., Harden, S. M., Zumbo, B. D., Sylvester, B. D., Kaulius, M., Ruissen, G. R., Dowd, A. J., & Beauchamp, M. R. (2016). The effectiveness of multi-component goal setting interventions for changing physical activity behaviour: A systematic review and meta-analysis. Health Psychology Review, 10, 67-88.

Homma Y, Saewyc E.M., & Zumbo B.D. (2016). Is it getting better? An analytical method to test trends in health disparities, with tobacco use among sexual minority vs. heterosexual youth as an example. International Journal of Equity in Health, 15:79, 1-8.   [Available at: http://equityhealthj.biomedcentral.com/articles/10.1186/s12939-016-0371-3].

Milligan, G.S., Reilly, T.J., Zumbo, B.D., & Tipton, M.J. (2016). Validity and Reliability of Physical Employment Standards. Applied Physiology, Nutrition, and Metabolism, vol. 41, (Number, 6; Suppl. 2), S83-S91.  [Available for download here

Sylvester, B. D., Standage, M., McEwan, D., Wolf, S. A., Lubans, D. R., Eather, N., Kaulius, M., Ruissen, G. R., Crocker, P. R. E., Zumbo, B. D., & Beauchamp, M. R. (2016). Variety support and exercise adherence behavior: Experimental and mediating effects. Journal of Behavioral Medicine, 39, 214-224.

2015


Zimmerman, D.W., & Zumbo, B.D. (2015). Resolving the Issue of How Reliability is Related to Statistical Power: Adhering to Mathematical Definitions. Journal of Modern Applied Statistical Methods, 14, 9-26.     [Available for download at: http://digitalcommons.wayne.edu/jmasm/vol14/iss2/5]

Zumbo, B.D., Liu, Y., Wu, A.D., Shear, B.R., Astivia, O.L.O. & Ark, T.K. (2015). A Methodology for Zumbo’s Third Generation DIF Analyses and the Ecology of Item Responding. Language Assessment Quarterly, 12, 136-151.

Astivia, O.L.O., & Zumbo, B.D. (2015). A cautionary note on the use of the Vale and Maurelli method to generate multivariate, non-normal data for simulation purposes. Educational and Psychological Measurement, 75, 541–567.

Maddox, B., Zumbo, B.D., Tay-Lim, B. S-H, & Demin Qu, I. (2015).  An Anthropologist among the Psychometricians: Assessment Events, Ethnography and DIF in the Mongolian Gobi. International Journal of Testing, 15, 291-309.

Homa, Y., Wong, S., Zumbo, B.D., & Saewyc, E. M. (2015). Ethnic identity and sexual initiation among East Asian youth in Canada. Journal of Immigrant and Minority Health, 17, 1580-1584.

Gunnell, K. E., Crocker, P. R. E., Mack, D. E., & Zumbo, B. D. (2015). The Effect of a Best Possible Physical Activity Self Intervention on Psychological Need Satisfaction, Well-Being, and Physical Activity. In C. Higgins (Ed.). Theories of Psychology: Fundamentals, Applications and Future Directions (pp. 1-13). Nova Publishers.

Cox, D. W., Krieshok, T. S., Bjornsen, A. L., & Zumbo, B. D. (2015). The Occupational Engagement Scale-Student: Development and initial validation. Journal of Career Assessment, 23, 107-116.

Beauchamp, M.R., Harden, S.M., Wolf, S.A., Rhodes, R.E., Liu, Y., Dunlop, W.L., Schmader, T., Sheel, A.W., Zumbo, B.D., & Estabrooks, P.A. (2015). GrOup based physical Activity for oLder adults (GOAL) randomized controlled trial: Study protocol. BMC Public Health, 15:592, 1-11.

Bourne, J., Liu, Y., Shields, C. A., Jackson, B., Zumbo, B. D., & Beauchamp, M. R. (2015). The Relationship Between Transformational Teaching and Adolescent Physical Activity: The Mediating Roles of Personal and Relational Efficacy Beliefs. Journal of Health Psychology, 20, 132-143.

2014


Zumbo, B.D. (2014). What Role Does, and Should, the Test Standards Play Outside of the United States of America?  Educational Measurement: Issues and Practice, 33, 31-33.

Hidalgo, M. D., Gómez-Benito, J., & Zumbo, B.D. (2014).  Binary Logistic Regression Analysis for Detecting Differential Item Functioning: Effectiveness of R-squared and Delta Log Odds Ratio Effect Size Measures. Educational and Psychological Measurement, 74, 927–949.

Thomas, D.R., Zumbo, B.D., Kwan, E., & Schweitzer, L.  (2014). On Johnson’s (2000) Relative Weights Method for Assessing Variable Importance: A Reanalysis. Multivariate Behavioral Research, 49, 329-338.

Wu, A.D., Zumbo, B.D., & Marshall, S.K. (2014). A Method to Aid in the Interpretation of EFA Results: An Application of Pratt’s Measures. International Journal of Behavioral Development, 38, 98-110.

Liu, Y., Zumbo, B.D., & Wu, A.D. (2014). Relative Importance of Predictors in Multilevel Modeling. Journal of Modern Applied Statistical Methods, 13, 2-22. For a reprint of this paper please click here.

Oliveri, M. E., Ercikan, K., & Zumbo, B. D. (2014). Effect of linguistic heterogeneity on the accuracy of detection of differentially functioning items between linguistic groups. Applied Measurement in Education, 27, 286-300.

Oliveri, M. E., Ercikan, K., Zumbo, B. D., & Lawless, R. (2014). Uncovering Substantive Patterns in Student Reponses in International Large-Scale Assessments – Comparing a Latent Class to a Manifest DIF Approach. International Journal of Testing, 14, 265-287.

Zumbo, B.D., & Chan, E.K.H, (Eds.) (2014). Validity and Validation in Social, Behavioral, and Health Sciences. New York: Springer.   Click here for informaiton about this edited book.

Chapters I co-authored in the edited book by Zumbo & Chan (2014):

Sandilands, D., Gotzmann, A., & Roy, M., Zumbo, B.D., & De Champlain, A. (2014). Weighting checklist items and station components on a large-scale OSCE:  Is it worth the effort?  Medical Teacher, 36, 585-590.

Fox, J., Cheng, L., & Zumbo B. D. (2014). Do they make a difference? The impact of English language programs on Second Language (L2) students in Canadian universities. TESOL Quarterly, 48, 57-85.

Zumbo, B.D. (2014). Alex C. Michalos: Pioneer of Quality of Life and Social Indicators Research. Applied Research in Quality of Life, 9, 457-459.

Lawlor, M.S., & Schonert-Reichl, K.A, Gadermann, A., & Zumbo, B.D. (2014). A validation study of the mindful attention awareness scale adapted for children. Mindfulness 5, 730-741.

Oberle, E., Schonert-Reichl, K. A., Hertzman, C., & Zumbo, B. D. (2014). Social-emotional competencies make the grade: Predicting academic achievement in early adolescence. Journal of Applied Developmental Psychology, 35, 138-147.

Sylvester, B. D., Standage, M., Ark, T., Sweet, S. N., Crocker, P. R. E., Zumbo, B. D. & Beauchamp, M. R. (2014). Is Variety a Spice of (an Active) Life?: Perceived Variety, Exercise Behavior, and the Mediating Role of Autonomous Motivation. Journal of Sport & Exercise Psychology, 36, 516-527.

Cox, D. W., Westwood, M. J., Hoover, S. M., Chan, E. K. H., Kivari, C. A., Dadson, M. R., & Zumbo, B. D. (2014). The evaluation of a group intervention for veterans who experienced military-related trauma. International Journal of Group Psychotherapy, 64, 367-380.

Oberle, E., Schonert-Reichl, K. A., Guhn, M., Zumbo, B. D., & Hertzman, C. (2014). The role of supportive adults in positive development in middle childhood: A population-based study. Canadian Journal of School Psychology, 29, 296-316.

Beauchamp, M.R., Liu, Y, Morton, K.L., Martin, L. J., Wilson, A. H., Wilson, A. J., Sylvester, B. D., Zumbo, B. D., & Barling, J. (2014). Transformational teaching and adolescent physical activity: Multilevel and mediational effects. International Journal of Behavioral Medicine, 21, 537-546.

Homma, Y., Zumbo, B.D., Saewyc, E.M., & Wong, S.T. (2014). Psychometric Evaluation of the 6-item Version of the Multigroup Ethnic Identity Measure with East Asian Adolescents in Canada. Identity: An International Journal of Theory and Research, 14, 1–18.

Gunnell, K. E., Crocker, P. R. E., Mack, D. E., Wilson, P. M., & Zumbo, B. D. (2014). Goal contents, motivation, psychological need satisfaction, well-being and physical activity over 6-months: A test of Self-Determination Theory. Psychology of Sport and Exercise, 15, 19-29.

Gunnell, K. E., Crocker, P. R. E., Mack, D. E., Zumbo, B. D. (2014). The role of psychological need satisfaction in the relationship between exercise self-schema and physical activity behaviour and well-being. International Journal of Sport Psychology, 45, 581-602..

Dowd, A. J., Schmader, T., Sylvester, B. D., Jung, M. E., Zumbo, B. D., Martin, L. J., & Beauchamp, M. R. (2014). Effect of social belonging and task framing on exercise cognitions and behavior. Journal of Sport and Exercise Psychology, 36, 80-92.

Zumbo, B. D. (2014). Nominal Scales. In A.C. Michalos (Ed.), Encyclopedia of Quality of Life and Well-Being Research (pp. 4368-4369). Springer, Dordrecht, Netherlands: Springer.

Zumbo, B. D. (2014). Interval Scale. In A.C. Michalos (Ed.), Encyclopedia of Quality of Life and Well-Being Research (pp. 3365-3366). Springer, Dordrecht, Netherlands: Springer.

Zumbo, B. D., & Michalos, A.C. (2014). Michalos-Zumbo Wellbeing Index. In A.C. Michalos (Ed.), Encyclopedia of Quality of Life and Well-Being Research (pp. 4032-4036). Springer, Dordrecht, Netherlands: Springer.

Gadermann, A. M., Guhn, M., & Zumbo, B.D. (2014). Ordinal Alpha. In A.C. Michalos (Ed.), Encyclopedia of Quality of Life and Well-Being Research (pp. 4513-4515). Springer, Dordrecht, Netherlands: Springer.

Guhn, M., Forer, B., & Zumbo, B.D. (2014). Reliable Change Index. In A.C. Michalos (Ed.), Encyclopedia of Quality of Life and Well-Being Research (pp. 5459-5462). Springer, Dordrecht, Netherlands: Springer.

2013


Zumbo, B.D., Wu, A.D., & Liu, Y. (2013). Measurement and Statistical Analysis Issues with Longitudinal Assessment Data. In Simon, M., Ercikan, K., & Rousseau, M. (Eds.), Improving Large Scale Education Assessment: Theory, Issues, and Practice, (pp. 276-289). London: Routledge.

Zumbo, B.D. (2013).  On Matters of Invariance in Latent Variable Models: Reflections on the Concept, and Its Relations in Classical and Item Response Theory. In Paolo Giudici, Salvatore Ingrassia, and Maurizio Vichi (Eds.), Statistical Models for Data Analysis, (pp. 399-408). New York: Springer.

Shear, B. R., & Zumbo, B.D. (2013). False Positives in Multiple Regression: Unanticipated Consequences of Measurement Error in the Predictor Variables. Educational and Psychological Measurement, 73, 733-756.    DOI:  http://dx.doi.org/ 10.1177/0013164413487738

Gómez-Benito, J., Hidalgo, M. D., & Zumbo, B.D. (2013).  Effectiveness of Combining Statistical Tests and Effect Sizes When Using Logistic Discriminant Function Regression to Detect Differential Item Functioning for Polytomous Items. Educational and Psychological Measurement,73, 875-897 .  
DOI:  http://dx.doi.org/ 10.1177/0013164413492419

Hubley, A. M., & Zumbo, B.D. (2013). Psychometric Characteristics of Assessment Procedures: An Overview. In Kurt F. Geisinger (Ed.), APA Handbook of Testing and Assessment in Psychology, Volume 1 (pp. 3-19). Washington, D.C.: American Psychological Association Press.

Ruhe, V., & Zumbo, B. D. (2013). Avaliação de Educação a Distância e e-Learning. (Adapted to Portuguese by Fernando de Siqueira Rodrigues and Enrique Blanco). Porto Alegre, Penso Editora.   For purchasing the book, click here.

Sandilands, D., Oliveri, M.E., Zumbo, B. D., & Ercikan, K. (2013).  Investigating Sources of Differential Item Functioning in International Large-Scale Assessment Using a Confirmatory Approach. International Journal of Testing, 13, 152–174.

Oliveri, M.E., Ercikan, K., & Zumbo, B. D. (2013).  Analysis of Sources of Latent Class DIF in International Assessments. International Journal of Testing, 13, 272-293.

Zaidman-Zait, A, & Zumbo, B. D. (2013). Can Multilevel (HLM) Models of Change Over Time Adequately Handle Missing Data? Journal of Educational Research and Policy Studies, 13(1), 18-31.   For a reprint, PDF, please click here.

Mosewich, A., Hadd, V., Crocker, P.R.E., & Zumbo, B. D. (2013). Invariance testing of the SF-36 Health Survey in women breast cancer survivors: Do personal and cancer-related variables influence the meaning of quality of life items? Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 110, 559-577.

Gunnell, K. E., Crocker, P. R. E., Wilson, P. M., Mack, D. E., Zumbo, B. D. (2013).  Psychological need satisfaction and thwarting: A test of Basic Psychological Needs Theory in physical activity contexts. Psychology of Sport and Exercise, 14, 599-607.

Homma, Y., Saewyc, E.M., Wong, S.T., & Zumbo, B.D. (2013). Sexual Health and Risk Behaviour among East Asian Adolescents in British Columbia. Canadian Journal of Human Sexuality, 22, 13-24.

Chlebak C. M., James S., Westwood M. J., Gockel A. M., Zumbo B. D., & Shapiro S. L. (2013). Mindfulness Meditation & Gratitude Journalling: The Experiences of Graduate Counselling Psychology Students. Counselling and Spirituality, 32, 79-103

2012


Liu, Y., & Zumbo, B.D. (2012). Impact of Outliers Arising from Unintended and Unknowingly Included Subpopulations on the Decisions about the Number of Factors in Exploratory Factor Analysis. Educational and Psychological Measurement, 72, 388-414.  DOI: http://dx.doi.org/ 10.1177/0013164411429821

Gunnell, K. E., Wilson, P. M., Zumbo, B. D., Mack, D. E., & Crocker, P. R. E. (2012). Assessing psychological need satisfaction in exercise contexts: Issues of score invariance, item modification, and context. Measurement in Physical Education and Exercise Science, 16, 219-236.

Sawatzky, R., Ratner, P.A., Kopec, J.A., & Zumbo, B. D. (2012). Latent Variable Mixture Models: A Promising Approach for the Validation of Patient Reported Outcomes. Quality of Life Research, 21, 637-650. (in addition an online Supplementary Technical Appendix, pp. 1-9, can be found at the journal or click here). DOI: http://dx.doi.org/10.1007/s11136-011-9976-6

Oliveri, M.E., Olson, B. D., Ercikan, K. & Zumbo, B. D. (2012). Methodologies for Investigating Item- and Test-Level Measurement Equivalence in International Large-Scale Assessments. International Journal of Testing, 12, 203-223.

Liu, Y., Zumbo, B. D., & Wu, A. D. (2012). A Demonstration of the Impact of Outliers on the Decisions about the Number of Factors in Exploratory Factor Analysis. Educational and Psychological Measurement, 72, 181-199.  DOI: http://dx.doi.org/10.1177/0013164411410878

Thomas, D. R., & Zumbo, B. D. (2012). Difference Scores from the Point of View of Reliability and Repeated Measures ANOVA: In Defense of Difference Scores for Data Analysis. Educational and Psychological Measurement, 72, 37-43.  DOI:  http://dx.doi.org/10.1177/0013164411409929

Gadermann, A. M., Guhn, M. & Zumbo, B. D. (2012). Estimating ordinal reliability for Likert-type and ordinal item response data: A conceptual, empirical, and practical guide. Practical Assessment, Research & Evaluation, 17(3), 1-13. URL: http://pareonline.net/pdf/v17n3.pdf 


Maggino, F., & Zumbo, B. D. (2012). Measuring the Quality of Life and the Construction of Social Indicators. In Kenneth C. Land, Alex C. Michalos, & M. Joseph Sirgy  (Eds.), Handbook of Social Indicators and Quality-of-Life Research, (pp. 201-238). Dordrecht, Netherlands: Springer Publishers.

2011

Zumbo, B. D., & Forer, B. (2011). Testing and Measurement from a Multilevel View: Psychometrics and Validation. In James A. Bovaird, Kurt F. Geisinger, & Chad W. Buckendahl (Editors).  High Stakes Testing in Education - Science and Practice in K-12 Settings, (pp.177-190).  American Psychological Association Press, Washington, D.C.. For a reprint, PDF, please click here.

Wu. A. D., Zumbo, B. D., Siegel, L. S. (2011). General Piecewise Growth Mixture Model: Word Recognition Development for Different Learners in Different Phases. Journal of Modern Applied Statistical Methods, 10(1), 226-248.  For a reprint, PDF, please click here.

Guhn, M., Zumbo, B. D., Janus, M., & Hertzman, C. (Editors) (2011). Validation theory and research for a population-level measure of children's development, wellbeing, and school readiness. [Special Issue]. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, vol. 103, No. 2, pp. 179-325.    URL:  http://www.springerlink.com/content/0303-8300/103/2/

Guhn , M., Zumbo, B. D., Janus, M., & Hertzman, C. (2011). Validation theory and research for a population-level measure of children's development, wellbeing, and school readiness. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 103, 183-191.  DOI:  http://dx.doi.org/10.1007/s11205-011-9841-6

Hubley, A. M., & Zumbo, B.D. (2011). Validity and the Consequences of Test Interpretation and Use. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 103, 219-230. DOI:  http://dx.doi.org/10.1007/s11205-011-9843-4

Forer , B., & Zumbo, B.D. (2011). Validation of Multilevel Constructs: Validation Methods and Empirical Findings for the EDI. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 103, 231-265. DOI:  http://dx.doi.org/10.1007/s11205-011-9844-3

Slocum-Gori, S. L., & Zumbo, B. D. (2011). Assessing the Unidimensionality of Psychological Scales: Using Multiple Criteria from Factor Analysis. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 102, 443-461. DOI: http://dx.doi.org/10.1007/s11205-010-9682-8

Nordstokke, D. W. Zumbo, B. D., Cairns, S. L., & Saklofske, D. H. (2011). The operating characteristics of the nonparametric Levene test for equal variances with assessment and evaluation data. Practical Assessment, Research & Evaluation, 16(5), 1-8. Available online: http://pareonline.net/getvn.asp?v=16&n=5.

Gadermann , A. M., Guhn, M.., & Zumbo, B. D. (2011). Investigating the substantive aspect of construct validity for the Satisfaction with Life Scale adapted for Children: A focus on cognitive processes. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 100, 37-60.  DOI: http://dx.doi.org/10.1007/s11205-010-9603-x   

Morton, K. L., Barling, J., Rhodes, R., Masse, L., Zumbo, B. D., & Beauchamp, M. R. (2011). The Application of Transformational Leadership Theory to Parenting: Questionnaire Development and Implications for Adolescent Self-Regulatory Efficacy and Life Satisfaction. Journal of Sport and Exercise Psychology, 33, 688-709.

Oberle , E. Schonert-Reichl, K.S., & Zumbo, B.D. (2011). Life Satisfaction in Early Adolescence: Personal, Neighborhood, School, Family, and Peer Influences. Journal of Youth and Adolescence, 40, 889-901 DOI:  http://dx.doi.org/10.1007/s10964-010-9599-1

Michalos, A.C., Smale, B., Labonté, R., Muharjarine, N., Scott, K., Moore, K., Swystun, L., Holden, B., Bernardin, H., Dunning, B., Graham, P., Guhn, M., Gadermann, A.M., Zumbo, B.D., Morgan, A., Brooker, A.-S., & Hyman, I. (2011). The Canadian Index of Wellbeing. Technical Report 1.0. Waterloo, ON: Canadian Index of Wellbeing and University of Waterloo.  For a reprint, PDF, please click here  

Zaidman-Zait, A., Mirenda, P., Zumbo, B.D., Georgiades, S., Szatmari, P., Bryson, S., Fombonne, E., Roberts, W., Smith, I., Vaillancourt, T., Volden, J, Waddell, C., Zwaigenbaum, L, Duku, E., Thompson, A., and the Pathways in ASD Study Team. (2011). Factor Analysis of the Parenting Stress Index-Short Form With Parents of Young Children With Autism Spectrum Disorders. Autism Research, 4, 336-346.   DOI:  http://dx.doi.org/10.1002/aur.213


Dhalla , S., Zumbo, B. D., & Poole, G. (2011). A Review of the Psychometric Properties of the CRAFFT Instrument: 1999-2010. Current Drug Abuse Review, 4, 57-64.

2010

Liu, Y., Wu, A. D., & Zumbo, B. D. (2010) The Impact of Outliers on Cronbach's Coefficient Alpha Estimate of Reliability: Ordinal/Rating Scale Item Responses.  Educational and Psychological Measurement, 70, 5-21.  DOI: http://dx.doi.org/

Nordstokke , D. W., & Zumbo, B. D. (2010). A New Nonparametric Levene Test for Equal Variances.  Psicologica, 31, 401-430.  For a reprint, PDF, please click here.

Wu, A. D., Liu, Y., Gadermann, A. M., & Zumbo, B.D. (2010). Multiple-indicator Multilevel Growth Model: A Solution to Multiple Methodological Challenges in Longitudinal Studies.  Social Indicators Research: International Interdisciplinary Journal for Quality of Life Measurement, 97, 123-142.     

Zaidman-Zait, A., Mirenda, P., Zumbo, B. D., Wellington, S ., Dua, V., & Kalynchuk, K. (2010). An Item Response Theory Analysis of the Parenting Stress Index-Short Form with Parents of Children with Autism Spectrum Disorders.  Journal of Child Psychology & Psychiatry, 51, 1269-1277.

Gadermann , A. M., Schonert-Reichl, K. A., & Zumbo, B. D. (2010). Investigating validity evidence of the Satisfaction with Life Scale adapted for children. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 96, 229-247.

Anaby , D., Jarus, T., Backman, C., & Zumbo, B.D. (2010). The Role of Occupational Characteristics and Occupational Imbalance in Explaining Well-being. Applied Research in Quality of Life, 5, 81-104.

Konishi , C., Hymel, S., Zumbo, B. D., & Li Z. (2010). Do School Bullying and Student-Teacher Relations Matter for Academic Achievement?: A Multilevel Analysis.  Canadian Journal of School Psychology, 25, 19-39.

Anaby, D., Jarus, T., & Zumbo,  B. D. (2010).  Psychometric Evaluation of the Hebrew Language Version of the Satisfaction With Life Scale. Social Indicators Research: International Interdisciplinary Journal for Quality of Life Measurement, 96, 267-274.

Sawatzky, R. Ratner, P.A., Johnson, J. L., Kopec, J. A., & Zumbo, B. D. (2010). Examining the Associations among Self-Reported Physical and Mental Health Status and Several Life Domains of Relevance to Adolescents' Quality of Life. Health and Quality of Life Outcomes, 8:17, 1-11.

Guhn , M., Gadermann, A. M., Hertzman, C., & Zumbo, B. D. (2010). Children's development in Kindergarten: A multilevel, population-based analysis of ESL and gender effects on socioeconomic gradients. Child Indicators Research, 3, 183-203.

Morton, K. L., Barling J., Rhodes, R., Masse, L., & Zumbo, B. D., & Beauchamp, M. R. (2010). Extending Transformational Leadership Theory to Parenting and Adolescent Health Behaviors: An Integrative and Theoretical Review. Health Psychology Review, 4, 128-157.

Guhn , M., Gadermann, A.M., & Zumbo, B. D. (2010). Education: A report of the Canadian Index of Wellbeing (CIW). Commissioned Report for the Canadian Index of Wellbeing Project, Atkinson Charitable Foundation, Toronto, Ontario. For a reprint, PDF, please click here.

Beauchamp, M. R., Barling, J. Li Z., Morton, K. L., Keith, S. E., & Zumbo, B. D. (2010). Development and Psychometric Properties of the Transformational Teaching Questionnaire. Journal of Health Psychology, 15, 1123-1134.

2009

Zumbo, B. D. (2009). Validity as Contextualized and Pragmatic Explanation, and Its Implications for Validation Practice. In Robert W. Lissitz (Ed.) The Concept of Validity: Revisions, New Directions and Applications, (pp. 65-82). IAP - Information Age Publishing, Inc.: Charlotte, NC.     For a reprint, PDF, please click here.     To learn about this recent book go to http://infoagepub.com/products/The-Concept-of-Validity

Beasley, & Zumbo, B. D. (2009). Aligned Rank Tests for Interactions in Split-Plot Designs: Distributional Assumptions and Stochastic Heterogeneity. Journal of Modern Applied Statistical Methods, 8, 16-50. For a reprint, PDF, please click here.

Frankland , B. W., & Zumbo, B. D. (2009). Quantifying Bimodality Part 2: A Likelihood Ratio Test for The Comparison of a Unimodal Normal Distribution and a Bimodal Mixture of Two Normal Distributions. Journal of Modern Applied Statistical Methods, 8, 51-67. For a reprint, PDF, please click here.

Lane, S., Zumbo, B. D., Abedi, J, Benson, J., Dossey, J., Elliott, S.N., Kane, M., Linn, R., Paredes-Ziker, C., Rodriguez, M., Schraw, G., Slatttery, J., Thomas, V., & Willhoft, J. (2009). Prologue: An Introduction to the Evaluation of NAEP. Applied Measurement in Education, 22, 309-316.

Li, Z., & Zumbo, B.D. (2009). Impact of Differential Item Functioning on Subsequent Statistical Conclusions Based on Observed Test Score Data. Psicologica , 30, 343-370.      For a reprint, PDF, please click here.

Zimmerman, D. W., & Zumbo, B.D. (2009). Hazards in Choosing Between Pooled and Separate-Variances t Tests.  Psicologica , 30, 371-390.  For a reprint, PDF, please click here.

Sawatzky , R. G., Ratner, P.A., Johnson, J. L., Kopec, J., & Zumbo B.D. (2009). Sample Heterogeneity and the Measurement Structure of the Multidimensional Student's Life Satisfaction Scale.  Social Indicators Research: International Interdisciplinary Journal for Quality of Life Measurement, 94, 273-296.

Ruhe , V., & Zumbo, B. D. (2009). Evaluation in Distance Education and E-learning: The Unfolding Model. New York, N.Y., Guilford Press.   Please click here for details about this book, and more information click here.

Lloyd, J.E.V., Zumbo, B. D., Siegel, L. S. (2009). When Measures Change over Time: A Workable Solution for Analysing Change and Growth across Multiple Waves. Journal of Educational Research and Policy Studies, 9, 81-100.     For a reprint, PDF, please click here.  

Slocum-Gori, S. L., Zumbo, B. D., Michalos, A. C., & Diener, E. (2009) A Note on the Dimensionality of Quality of Life Scales: An Illustration with the Satisfaction With Life Scale (SWLS).  Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 92, 489-496.

Richardson C. G., Johnson J. L., Ratner P. A. , Zumbo B. D. (2009). The influence of web- versus paper-based formats on the assessment of tobacco dependence: Evaluating the measurement invariance of the Dimensions of Tobacco Dependence Scale. Substance Abuse: Research and Treatment. 3, 1-14.

Kershaw, P., Forer, B., Lloyd, J.E.V., Hertzman, C., Boyce, W. T., Zumbo, B. D., Guhn, M., Milbrath, C., Irwin, L. G., Harvey, J., Hershler, R., & Smith, A. (2009). The Use of Population-Level Data to Advance Interdisciplinary Methodology:  A Cell-through-Society Sampling Framework for Child Development Research. International Journal of Social Research Methodology, 12, 387-403.

Konishi , C., Hymel, S., Zumbo, B. D., Li, Z., Taki, M., Slee, P., Pepler, D., Sim, H.-O., Craig, W., Swearer, S., Kwak, K. (2009). Investigating the Comparability of a Self-Report Measure of Childhood Bullying Across Countries. Canadian Journal of School Psychology, 24, 82-93.

Richardson, C. G., Ratner, P. A., & Zumbo, B. D. (2009). Further Support for multidimensionality within the Rosenberg Self-Esteem Scale. Current Psychology, 28, 98-114.

McIntosh , K., Campbell, A. L., Carter, D. R., &  Zumbo, B. D. (2009). Concurrent Validity of Office Discipline Referrals and Cut Points Used in Schoolwide Positive Behavior Support. Behavioral Disorders , 34 (2), 100-113.

Bopp , K. D., Mirenda, P., & Zumbo, B. D. (2009). Behavior Predictors of Language Development Over Two Years in Children with Autism Spectrum Disorders. Journal of Speech, Language, and Hearing Research, 52, 1106-1120.

Lorenzi , M., McMillan, A. J., Siegel, L. S., Zumbo, B. D., Glickman, V., Spinelli, J. L., Goddard, K. J., Pritchard, S. L., Rogers, P. C., & McBride, M. L. (2009).  Educational Outcomes among Survivors of Childhood Cancer in British Columbia, Canada: Report of the Childhood/Adolescent/Young Adult Cancer Survivors (CAYACS) ProgramCancer , 115(10), 2234-2245.

2008

Thomas, D. R., Zhu, P., Zumbo, B. D., & Dutta, S. (2008). On Measuring the Relative Importance of Explanatory Variables in a Logistic Regression. Journal of Modern Applied Statistical Methods, 7, 21-38.    For a reprint, PDF, please click here.   To see the journal click here

Koh , K., & Zumbo, B. D. (2008). Multi-Group Confirmatory Factor Analysis for Testing Measurement Invariance in Mixed Item Format Data. Journal of Modern Applied Statistical Methods, 7, 471-477.  For a reprint, PDF, please click here.   To see the journal click here

Elosua , P., & Zumbo, B. D. (2008). Coeficientes de fiabilidad para escalas de respuesta categorica ordenada. Psicothema , 20, 896-901.    {Spanish paper; English title: Reliability coefficients for ordinal response scales}

Zumbo, B.D. (2008).  Statistical Methods for Investigating Item Bias in Self-Report Measures, [The University of Florence Lectures on Differential Item Functioning].  Universita degli Studi di Firenze, Florence, Italy.  For a copy go to the following website Click here

Headrick , T. C., & Zumbo, B. D. (2008).  A Method for Simulating Multivariate Non-normal Distributions with Specified Standardized Cumulants and Intraclass Correlation Coefficients.  Communications in Statistics: Simulation and Computation, 37, 617-628.

Wu, A. D. & Zumbo, B. D. (2008). Understanding and Using Mediators and Moderators. Social Indicators Research: An International Interdisciplinary Journal for Quality of Life Measurement, 87, 367-392.

Rusticus , S., Hubley, A. M., & Zumbo, B. D.. (2008). Measurement Invariance of the Appearance Schemas Inventory-Revised and the Body Image Quality of Life Inventory across Age and Gender. Assessment, 15, 60-71. 

Chen W., Bottorff, J. L., Johnson, J. L., Saewyc, E., & Zumbo, B. D. (2008). Susceptibility to Smoking Among White and Chinese Nonsmoking Adolescents in Canada. Public Health Nursing, 25, 18-27.

2007

Nordstokke , D. W., & Zumbo B. D. (2007). A Cautionary Tale About Levene's Tests for Equal Variances. Journal of Educational Research and Policy Studies, 7, 1-14.   For a reprint, PDF, please click here.   To see the journal click here 

Lloyd, J.E.V. & Zumbo, B. D. (2007). The Non-Parametric Difference Score: A Workable Solution for Analysing Two-Wave Change when the Measures Themselves Change across Waves. Journal of Modern Applied Statistical Methods, 6, 413-420.     For a reprint, PDF, please click here.

Zumbo, B.D. (2007). Validity: Foundational Issues and Statistical Methodology.  In C.R. Rao and S. Sinharay (Eds.) Handbook of Statistics,  Vol. 26: Psychometrics, (pp. 45-79). Elsevier Science B.V.: The Netherlands.   For a reprint, PDF, please click here.

Zumbo, B.D. (2007). Three generations of differential item functioning (DIF) analyses: Considering where it has been, where it is now, and where it is going.  Language Assessment Quarterly, 4, 223-233.  For a reprint, PDF, please click here.

Zumbo, B. D., Gadermann, A. M., & Zeisser, C.. (2007). Ordinal Versions of Coefficients Alpha and Theta For Likert Rating Scales. Journal of Modern Applied Statistical Methods, 6, 21-29.   For a reprint, please click here.

Wu , A. D., & Zumbo, B.D. (2007). Thinking About Item Response Theory from a Logistic Regression Perspective: A Focus on Polytomous Models. In Shlomo S. Sawilowsky (Ed.), Real Data Analysis (pp. 241-269).  AERA, Educational Statisicians Book Series.  Information Age Publishing, Inc.., Greenwich, CT..  For a reprint, PDF, please click here.
 
Liu, Y., & Zumbo, B. D. (2007). The Impact of Outliers on Cronbach's Coefficient Alpha Estimate of Reliability: Visual Analogue Scales.  Educational and Psychological Measurement, 67, 620-634.  DOI: http://dx.doi.org/10.1177/0013164406296976

Wu. A. D., Li, Z., & Zumbo, B. D. (2007). Decoding the Meaning of Factorial Invariance and Updating the Practice of Multi-group Confirmatory Factor Analysis: A Demonstration With TIMSS Data. Practical Assessment, Research and Evaluation, 12(3), 1-26.   To see the journal click here   For a reprint, PDF, please click here.

Mulvenon , S. W. Betz, M. A., Wang, K., & Zumbo, B. D. (2007). Application of a New Procedure for Power Analysis and Comparison of the Adjusted Univariate and Multivariate Tests in Repeated Measures Designs.  Journal of Modern Applied Statistical Methods, 6, 36-52.   For a reprint, please click here.

Richardson, C. G., Ratner, P. A., & Zumbo, B. D. (2007). A Test of the Age-Based Measurement Invariance and Temporal Stability of Antonovsky’s Sense of Coherence Scale. Educational and Psychological Measurement, 67, 679-696.

Gadermann , A. M., & Zumbo, B.D. (2007). Investigating the Intra-individual Variability and Trajectories of Subjective Well-Being. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 81, 1-33. 

Richardson CG, Johnson JL, Ratner PA,  Zumbo B.D., Bottorff JL, Shoveller JA, & Prkachin KM. (2007) Validation of the Dimensions of Tobacco Dependence Scale for Adolescents. Addictive Behaviors, 32, 1498-1504.

Guhn , M., Gadermann, A. M., & Zumbo, B. D. (2007). Does the EDI measure school readiness in the same way across different groups of children?  Early Education and Development, 18, 453-472..

Lapointe , V. R., Ford, L., & Zumbo, B. D. (2007). Examining the Relationship of Neighbourhood Environment to the School Readiness of Kindergarten Children. Early Education and Development, 18, 473-495.

Zumbo, B. D., & Forer, B. (2007). Friedman Test.  In Neil J. Salkind (Ed.), Encyclopedia of Measurement and Statistics (Vol. I, pp. 380-382). Thousand Oak s, CA: Sage Publications.

Maller , S. J., French. B. F., & Zumbo, B. D. (2007). Item and Test Bias.  In Neil J. Salkind (Ed.), Encyclopedia of Measurement and Statistics (Vol. II, pp. 489-493). Thousand Oak s, CA: Sage Publications.

Gelin , M. N., & Zumbo, B. D. (2007). The operating characteristics of the DIF MIMIC approach using Joreskog's covariance matrix with ML and WLS estimation for short scales.  Journal of Modern Applied Statistical Methods, 6, 573-588.    For a reprint, PDF, please click here.

2006

Liu, Y., Wu, A. D., & Zumbo, B. D. (2006).
The Relation between Outside-of-School Factors and Mathematics Achievement: A Cross-country Study among the U.S. and Five Top-performing Asian Countries. Journal of Educational Research and Policy Studies, 6, 1-35.  For a reprint, PDF, please click here.  To see the journal click here 

Williams, R. H., Zimmerman, D. W., Ross D. C., &  Zumbo, B. D. (2006). Twelve British Statisticians. Raleigh, N.C., Boson Books.

Rupp, A. A., & Zumbo, B. D. (2006). Understanding Parameter Invariance in Unidimensional IRT Models.  Educational and Psychological Measurement, 66, 63-84.

Russell, L. B., Hubley, A. M., Palepu, A., & Zumbo, B. D. (2006). Does weighting capture what's important? Revisiting subjective importance weighting with a quality of life measure. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 75, 141-167.

Ruhe , V., & Zumbo, B. D. (2006). Using Messick's Framework to Validate Assessment Tasks in Online Environments: A course in writing effectively for UNHCR. In David D. Williams, Scott L. Howell, & Mary Hricko (Eds.), Online assessment, measurement and evaluation: Emerging practices, (pp. 203-226). Pennsylvania, Information Science Publishing, Idea Group Inc..

2005

Zumbo, B. D., & Gelin, M.N. (2005). A Matter of Test Bias in Educational Policy Research: Bringing the Context into Picture by Investigating Sociological / Community Moderated (or Mediated) Test and Item Bias. Journal of Educational Research and Policy Studies, 5, 1-23.   For a reprint, PDF, please click here.  To see the journal click here 

Zumbo, B. D. (2005). Structural Equation Modeling and Test Validation. In Brian Everitt and David C. Howell, Encyclopedia of Statistics in Behavioral Science, (pp. 1951-1958). Chichester, UK: John Wiley & Sons Ltd.   For a reprint, PDF, click here

Zumbo, B. D., & Koh, K. H. (2005). Manifestation of Differences in Item-Level Characteristics in Scale-Level Measurement Invariance Tests of Multi-Group Confirmatory Factor Analyses. Journal of Modern Applied Statistical Methods, 4, 275-282.   For a reprint, PDF, click here        

Kristjansson , E., Aylesworth, R., McDowell, I, & Zumbo, B. D. (2005). A comparison of four methods for detecting DIF in ordered response items. Educational and Psychological Measurement, , 65, 935-953.

Zimmerman, D. W., & Zumbo, B. D. (2005). Can Percentiles Replace Raw Scores in Statistical Analysis of Test Data?  Educational and Psychological Measurement, 65, 616-638.   DOI: http://dx.doi.org/10.1177/0013164404272499  

Headrick , T. C., & Zumbo, B. D. (2005). On Optimizing Multi-Level Designs: The Concern For Power Under Budget Constraints. Australian & New Zealand Journal of Statistics, 47, 219-229.      For a reprint, PDF, please click here.

Shimizu , Y., & Zumbo, B. D. (2005). A Logistic Regression for Differential Item Functioning Primer.  Japan Language Testing Association Journal, 7, 110-124.   For a reprint, PDF, click here

Zimmerman, D. W., Williams, R. H., Zumbo, B. D., & Ross, D. (2005). Louis Guttman's Contributions to Classical Test Theory.  International Journal of Testing, 5, 81-95.

Lu, I. R. R., Thomas, D. R., & Zumbo, B. D. (2005). Embedding IRT In Structural Equation Models: A Comparison With Regression Based On IRT Scores. Structural Equation Modeling, 12, 263-277.

Michalos , A. C., Thommasen, H. V., Read, R., Anderson, N., & Zumbo, B. D. (2005). Determinants of health and the quality of life in the Bella Coola Valley. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 72, 1-50.

Johnson, J. L., Ratner, P. A., Tucker, R. S., Bottorff, J. L., Zumbo, B. D. Prkachin, K. M., Shoveller, J., & (2005).   Development of a Multi-Dimensional Measure of Tobacco Dependence in Adolescence.  Addictive Behaviors, 30, 501-515.

2004

Zumbo, B. D., & Rupp, A. A. (2004). Responsible Modeling of Measurement Data For Appropriate Inferences: Important Advances in Reliability and Validity Theory. In David Kaplan (Ed.), The SAGE Handbook of Quantitative Methodology for the Social Sciences (pp. 73-92). Thousand Oak s, CA: Sage Press. For a reprint click here.

Rupp, A. A., Dey, D. K., & Zumbo, B. D. (2004). To Bayes or Not to Bayes, From Whether to When: Applications of Bayesian Methodology to Modeling. Structural Equation Modeling, 11, 424-451.

Headrick , T. C., & Zumbo, B. D. (2004). A method for simulating multivariate non-normal distributions with specified intraclass correlations. Proceedings of the Statistical Computing Section, American Statistical Association, Statistical Computing Section [CD-ROM], (pp. 2462-2467), Alexandria, VA.

Koh , K. H., Baba, M., Abdullah, R., & Zumbo, B. D. (2004). Psychological Testing in Malaysia. Testing International, 14, 4-6.

Palin , J., & Zumbo, B. D. (2004). Measurement Of Health Care Utilization In Canada: Agreement Between Surveys And Administrative Records. Statistics Canada International Symposium Series Proceedings. Symposium 2003: Challenges in Survey Taking for the Next Decade, (pp. 1-9), Ottawa, ON.

James, S., Slocum, S. L., & Zumbo, B. D. (2004). Measuring Agonias Among Female Portuguese Immigrants: Construct Description And Psychometric Properties. International Journal of Testing, 4, 183-188.

Gelin , M. N., Carleton, B. C., Smith, A., & Zumbo, B. D. (2004). The Dimensionality And Gender Differential Item Functioning Of The Mini Asthma Quality Of Life Questionnaire. Social Indicators Research: An International And Interdisciplinary Journal For Quality-Of-Life Measurement, 68, 91-105.

Rupp , A. A., & Zumbo, B. D. (2004).. A Note on How to Quantify and Report Whether Invariance Holds for IRT Models: When Pearson Correlations Are Not Enough.  Educational and Psychological Measurement, 64, 588-599. {Errata, (2004) Educational and Psychological Measurement, 64, 991}

Johnson, J. L., Tucker, R. S., Ratner, P. A., Bottorff, J. L., Prkachin, K. M., Shoveller, J., & Zumbo, B. D. (2004). Socio-Demographic Correlates of Cigarette Smoking Among High School Students: Results from the British Columbia Youth Survey on Smoking and Health. Canadian Journal of Public Health, 95, 268-271.

2003

Ryan, M., Taunton, J., Zumbo, B. D., Khan, K., & Lloyd-Smith, D. R. (2003). An analysis of running injuries within the Vancouver Sun Run in training clinics. (Theme issue on Sport Medicine) British Columbia Medical Journal, 45, 439-443.

Miller, N., Taunton, J., Fraser, S., Rhodes, T., & Zumbo, B. D. (2003). Kangoo Jumps: An Innovative Safe New Exercise Training Device. (Theme issue on Sport Medicine) British Columbia Medical Journal, 45, 444-448.

Rezmovitz , J., Taunton, J., Rhodes, T., Martin, A., & Zumbo, B. D. (2003). The Effects of a Lower Body Resistance Training Protocol on Static Balance and Well Being in Older Adult Women. (Theme issue on Sport Medicine) British Columbia Medical Journal, 45, 449-455.

Rupp, A. A., & Zumbo, B. D. (2003). Which Model is Best? Robustness Properties to Justify Model Choice among Unidimensional IRT Models under Item Parameter Drift. Alberta Journal of Educational Research, 49, 264-276.  For a reprint, PDF, click here.

Williams, K. M., & Zumbo, B. D. (2003). Item characteristic curve estimation of signal detection theory-based personality data: A two-stage approach to item response modeling. International Journal of Testing, 3, 189-213.

Kristjansson , E. A., Desrochers, A., & Zumbo, B. D. (2003). Translating and adapting measurement instruments for cross-cultural research: A guide for practitioners. Canadian Journal of Nursing Research, 35, 127-142.

Zumbo, B. D., & Hubley, A. M. (2003). Item Bias. In In Rocio Fernandez-Ballesteros (Ed.). Encyclopedia of Psychological Assessment, pp. 505-509.  Sage Press, Thousand Oaks, CA.

Williams, R. H., Zumbo, B. D., Ross, D., & Zimmerman, D. W. (2003). On the Intellectual Versatility of Karl Pearson. Human Nature Review, 3, 296-301.

Zumbo, B. D. (2003). Does Item-Level DIF Manifest Itself in Scale-Level Analyses?: Implications for Translating Language Tests. Language Testing, 20, 136-147.

Beasley, T. M., & Zumbo, B. D. (2003). Comparison of Aligned Friedman Rank and Parametric Methods for Testing Interactions in Split-Plot Designs. Computational Statistics and Data Analysis, 42, 569-593.

Williams, R.H., Zimmerman, D.W., Zumbo, B. D., & Ross, D. (2003). Charles Spearman: British Behavioral Scientist. Human Nature Review, 3, 114-118.

Zimmerman, D. W., Zumbo, B. D., & Williams, R. H. (2003). Bias in Estimation and Hypothesis Testing of Correlation. Psicologica : Revista de Metodologica Psicologica Experimental, 24 , 133-158. For a reprint, PDF, click  here .

Gelin , M. N., & Zumbo, B. D. (2003). DIF results may change depending on how an item is scored: An illustration with the Center for Epidemiological Studies Depression (CES-D) scale.  Educational and Psychological Measurement, 63, 65-74.

Michalos , A. C., & Zumbo, B. D. (2003). Leisure Activities, Health and the Quality of Life. In Alex C. Michalos (Ed.) Essays on the Quality of Life.   Netherlands: Kluwer Academic Press. 32 pages

Taunton JE, Ryan MB, Clement DB, McKenzie, D C , Lloyd-Smith, D R & Zumbo B. D. (2003).A Prospective Study of Running Injuries: The Vancouver Sun Run's In Training Clinics. The British Journal of Sports Medicine, 37, 239-244.

Rocha, E. M., Prkachin, K. M., Beaumont, S. L., Hardy, C. L., & Zumbo, B. D. (2003). Pain reactivity and somatization in Kindergarten-aged Children.  Journal of Pediatric Psychology, 28, 47-57.

2002

Thomas, D.R., Lu, I. R. R., & Zumbo, B. D. (2002). Embedding IRT in structural equation models: A comparison with regression based on IRT scores.  Proceedings of Statistics Canada Symposium 2002. Modelling Survey Data for Social and Economic Research, Ottawa, ON.

Zumbo, B. D., Gelin, M. N., & Hubley, A. M. (2002). The Construction And Use Of Psychological Tests And Measures. In the Psychology theme of the Encyclopedia of Life Support Systems (EOLSS), Eolss Publishers, Oxford, UK, [http://www.eolss.net] (entry, 6.27.3.4)   Reprint click here

Breithaupt , K., & Zumbo, B. D. (2002). Sample invariance of the structural equation model and the item response model: a case study. Structural Equation Modeling, 9, 390-412.

Zumbo, B. D., & Jennings, M. J. (2002). The Robustness of Validity and Efficiency of the Related Samples t-test in the Presence of Outliers.  Psicologica : Revista de Metodologica Psicologica Experimental, 23 , 415-450.  For a reprint, PDF, click  here .

Frankland , B. W., & Zumbo, B. D. (2002). Quantifying bimodality Part I: An easily implemented method using a widely available computer program, SPSS.  Journal of Modern Applied Statistical Methods,1, 157-166.   For a reprint, PDF, click  here.

Zumbo, B. D. (2002). An adaptive inference strategy: The case of auditory data. Journal of Modern Applied Statistical Methods, 1, 61-68.  For a reprint, PDF, click  here.

Michalos , A.C., & Zumbo, B. D. (2002). Healthy days, health satisfaction and satisfaction with the overall quality of life. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 59, 321-338.

Zumbo, B. D. (Ed.) (2002). Advances in Quality-of-Life Research 2001.  Netherlands: Kluwer Academic Press.   {This was also published as a special issue of the journal edited by B. Zumbo, Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, (2002), Volume 60, No.1-3, 335 pages}

Thommasen , H. V., van der Weyde, M. P., Michalos, A.C., Zumbo, B. D., & Hagan, C.A. (2002). Satisfaction with work and quality of life among British Columbia's physicians. British Columbia Medical Journal, 44, 188-195.

Bryant, J., Browne, A. J., Barton, S., & Zumbo, B. D. (2002). Access to health care: Social determinants of preventive cancer screening use in northern British Columbia. In Bruno D. Zumbo (Ed.), Advances in Quality-of-Life Research. Netherlands: Kluwer Academic Press.  (reprinted from Social Indicators Research: Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, volume 60, pp. 243-262).

Zumbo, B. D. (2002). Contemporary Uses of Computer- and Internet-Based Testing, a Particularly Appealing Context for the Application of Bayesian Statistical Methods. Testing International, 12(1), 8-10.

Taunton JE, Ryan MB, Clement DB, McKenzie DC, Lloyd-Smith DR, & Zumbo B. D. (2002). A Retrospective Case Control Analysis of 2002 Running Injuries: Allan McGavin Sports Medicine Centre: 1998 - 2000. British Journal of Sports Medicine, 36, 95-101.

Johnston, C. A. M.,  Taunton, J.E. , Zumbo, B D., Lloyd-Smith, D.R., McKenzie, D.C., (2002). Vancouver Sun Run: A study of the training habits and general health of its participants. British Columbia Medical Journal, 44, 356-361.

Michalos , A.C., & Zumbo, B. D. (2002). Quality of Life in Quesnel, British Columbia. (Paper No. ESQESS-2002-1). Vancouver, B.C.: University of British Columbia. Edgeworth Laboratory for Quantitative Educational and Social Science.

Michalos , A.C., & Zumbo, B. D. (2002). British Columbians' Expectations and Attitudes Going into the Third Millennium. (Paper No. ESQESS-2002-2). Vancouver, B.C.: University of British Columbia. Edgeworth Laboratory for Quantitative Educational and Social Science.

Leisinger , M. A., Michalos, A. C., & Zumbo, B. D. (2002). Effects of the British Columbia Public Health Officer's Health Determinants on the Health Utility Index and the Richardson-Zumbo Health Profile. (Paper No. ESQESS-2002-3). Vancouver, B.C.: University of British Columbia. Edgeworth Laboratory for Quantitative Educational and Social Science.

2001

Zimmerman, D. W., & Zumbo, B. D. (2001). The Geometry of Probability, Statistics, and Test Theory. International Journal of Testing, 1, 283-303.

Michalos , A. C., Hubley, A. M., Zumbo, B. D., & Hemingway, D. (2001). Health and other aspects of the quality of life of older people. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 54, 239-274.

Headrick , T. C., & Zumbo, B. D. (2001). Optimizing experimental designs relative to variance components and price inputs. Proceedings of the Biometrics Section, American Statistical Association, Alexandria, VA.

Zumbo, B.D. (2001). Methodology and Measurement Matters In Establishing A Bona Fide Occupational Requirement For Physically Demanding Occupations. In Norman Gledhill, Jean Bonneau, & Art Salmon (Eds.). Proceedings of the Consensus Forum on Establishing BONA FIDE Requirements for Physically Demanding Occupations, (pp. 37-52). Toronto, ON.

Michalos , A. C., & Zumbo, B. D. (2001). Ethnicity, modern prejudice, and the quality of life. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 53, 189-222.

Williams, R. H., Zumbo, B. D., & Zimmerman, D. W. (2001). The Scientific Contributions of R. A. Fisher. (Paper No. ESQESS-2001-7). Vancouver, B.C.: University of British Columbia. Edgeworth Laboratory for Quantitative Educational and Social Science.  {Also reprinted as Williams, R. H., Zumbo, B. D., & Zimmerman, D. W. (in press). The Life of R. A. Fisher: I. His Scientific Contributions. Starry Night Review  --literary magazine}.

2000

Michalos , A.C., Zumbo, B.D., & Hubley, A.M. (2000) Health and the Quality of Life. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 51, 245-286.

Hewlett, M., Boonstra, J., Bell, J., & Zumbo, B. D. (2000). Can LASSI score profiles help identify postsecondary students with underlying reading problems?. Journal of College Reading and Learning, 30, 135-143.

Richardson, C. G., & Zumbo, B. D. (2000). A Statistical Examination of the Health Utility Index-Mark III as a Summary Measure of Health Status for a General Population Health Survey. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 51, 171-191.

Michalos , A. C., & Zumbo, B. D. (2000). Criminal victimization and Quality-of-Life. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 50, 245-295.

Zumbo, B. D., & Michalos, A. C. (2000). Quality of life in Jasper, Alberta. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 49, 121-145.

Zumbo, B. D., Hubley, A. M., & Davidson, B. (2000). A Survey Of Competencies And Characteristics Of Entry-Level Measurement Specialists And/Or Quantitative Methodologists. International Test Commission Newsletter, 10, 9-11.

Zumbo, B. D., & Michalos, A.C. (2000, July). Evaluation of an employment assistance network: 2 Year Follow-up Data. For Human Resources Development Canada, by The Institute for Social Research and Evaluation, UNBC, Prince George, BC.

1999


Zumbo, B. D. (1999). A handbook on the theory and methods of differential item functioning (DIF): Logistic regression modeling as a unitary framework for binary and Likert-type (ordinal) item scores. Ottawa, ON: Directorate of Human Resources Research and Evaluation, Department of National Defense.  For a reprint of the Handbook in PDF, and access to the SPSS syntax and example data file, click here

Higgins, N.C., Zumbo, B.D., & Hay, J. L. (1999).  Construct validity of attributional style: Modeling context-dependent item sets in the Attributional Style Questionnaire.  Educational and Psychological Measurement, 59, 804-820.

Zumbo, B. D., & MacMillan, P. D. (1999). An overview and some observations on the psychometric models used in computer-adaptive language testing. In M. Chalhoub-Deville (Ed.), Issues in computer-adaptive testing of reading proficiency, (pp. 216-228). Cambridge UK: Cambridge University Press.

Zumbo, B. D. (1999). The simple difference score as an inherently poor measure of change: Some reality, much mythology. In Bruce Thompson (Ed.).  Advances in Social Science Methodology,  Volume 5, (pp. 269-304). Greenwich, CT: JAI Press.  For a reprint in PDF click here

Michalos , A. C., & Zumbo, B. D. (1999). Public services and the quality of life. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 48, 125-156.

Morrison, M. A., Morrison, T. G., Pope, G. A., & Zumbo, B. D. (1999). An investigation of measures of modern and old-fashioned sexism.  Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 48, 39-49.

Zumbo, B. D., & McQuitty, S. (1999). "Structural equation modeling with LISREL, PRELIS, and SIMPLIS" -- A review.  Applied Psychological Measurement, 23, 179-182.

Zumbo, B. D., & Harwell, M. R.  (1999). The methodology of methodological research: Analyzing the results of simulation experiments (Paper No. ESQBS-99-2). Prince Georg e, B.C.: University of Northern British Columbia. Edgeworth Laboratory for Quantitative Behavioural Science.

Zumbo, B. D. (1999). A glance at coefficient alpha with an eye towards robustness studies: Some mathematical notes and a simulation model (Paper No. ESQBS-99-1). Prince Georg e, B.C.: University of Northern British Columbia. Edgeworth Laboratory for Quantitative Behavioural Science.

1998

Thomas, D. R., Hughes, E., & Zumbo, B. D. (1998). On variable importance in linear regression. Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, 45, 253-275.

Perlini , A. H., Lind, D., & Zumbo, B. D. (1998). Context effects on examinations: The effects of time, item order, and item difficulty. Canadian Psychology, 39, 299-307.

Zumbo, B. D. (1998). A viable alternative to null hypothesis testing.  Behavioral and Brain Sciences, 21, 227-228.

Zumbo, B. D., & Hubley, A. M. (1998). A note on misconceptions concerning prospective and retrospective power. Journal of the Royal Statistical Society, Series D (The Statistician), 47, 385-388.

Zumbo, B. D. (1998). "Design and Analysis of Single-Case Research" -- A review.  Journal of the Royal Statistical Society, Series D: The Statistician, 47(3), 541-543.

Zumbo, B. D. (Ed.) (1998). Validity Theory and the Methods Used in Validation: Perspectives from the Social and Behavioral Sciences. Netherlands: Kluwer Academic Press.   {This is a special issue of the journal Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Volume 45, No. 1-3, 509 pages}

Browne, A. J., Dolan, T., Spaulding, L., & Zumbo, B. D. (1998) Women and alcohol: Assessment, women-centered perspectives and treatment.  Working Paper Series, Child Welfare Research Centre, University of Northern British Columbia, Prince George, BC.

Zumbo, B. D., & Hubley, A. M. (1998). Differential item functioning (DIF) analysis of a synthetic CFAT. [Technical Note 98-, Personnel Research Team], Ottawa, ON: Department of National Defense.

Zumbo, B. D., & Michalos, A.C. (1998, July). Evaluation of an employment assistance network.  For Human Resources Development Canada, by The Institute for Social Research and Evaluation, UNBC, Prince George, BC.

1997

Keselman , H. J., Cribbie, R., & Zumbo, B. D. (1997).  Specialized tests for detecting treatment effects in the two-sample problem.  Journal of Experimental Education, 65, 355-366.

Zumbo, B. D., Pope, G. A., Watson, J. E., & Hubley, A. M. (1997).  An empirical test of Roskam's conjecture about the interpretation of an ICC parameter in personality inventories. Educational and Psychological Measurement, 57, 963-969.

Zumbo, B. D., & Coulombe, D. (1997).  Investigation of the robust rank-order test for non-normal populations with unequal variances: The case of reaction time.  Canadian Journal of Experimental Psychology, 51, 139-150.

Fox, J., Pychyl, T., & Zumbo, B. D. (1997).  An investigation of background knowledge in the assessment of language proficiency.  In A. Huhta, V. Kohonen, L. Kurki-Suonio, & S. Luoma, (Eds.), Current developments and alternatives in language assessment (pp. 367 - 383). Jyveskola: University of Jyveskola and University of Tampere..

Zumbo, B. D., & Hubley, A. M. (1997). A Psychometric study of the Canadian Forces Aptitude Test (CFAT). [Technical Note 98-10 , Personnel Research Team],