Lab Members

Former and Current doctoral (Ph.D.) students under Professor Zumbo’s direction – a link is provided to the dissertation at the university repository

NameDissertation title (year) University
1. Krista BreithauptA comparison of the sample invariance of item statistics from the classical test model, item response model, and structural equation model: A case study of real response data. (2000)University of 
Ottawa
2. Charles OwuorImplications of using Likert data in multiple regression analysis. (2001)University of 
British 
Columbia
3. Valerie RuheApplying Messick’s framework to the evaluation data of distance/distributed instructional programs. (2002)University of 
British 
Columbia 
(CCFI)
4. Andre A. RuppInvestigations of parameter invariance in IRT models: theoretical and practical avenues for understanding a fundamental property of measurement. (2003)University of 
British 
Columbia
5. Petronilla Murlita WitarsaNonparametric item response modeling for identifying differential item functioning in the moderate-to-small-scale testing context. (2003)University of 
British 
Columbia
6. Kim KohType I error rates for multi-group confirmatory maximum likelihood factor analysis with ordinal and mixed item format data: a methodology for construct comparability. (2003)University of 
British 
Columbia
7. Serge G. DemersRobustness of the Hotelling’s T-squared test in the presence of outliers in a related measures setting. (2005)
(co-supervisor  with Richard Wolfe)
University of 
Toronto / 
OISE 
8. Michaela GelinType I error rates of the DIF MIMIC approach using Joreskog’s covariance matrix with ML and WLS estimation. (2005)University of 
British 
Columbia
9. Suzanne SlocumAssessing unidimensionality of psychological scales: using individual and integrative criteria from factor analysis. (2005)University of 
British 
Columbia
10. Sharon G. BarnettRelative performance of scoring designs for the assessment of constructed responses. (2005)University of 
British 
Columbia
11. Jennifer E.  LloydOn modelling change and growth when the measures themselves change across waves: methodological and measurement issues and a novel non-parametric solution. (2006)University of 
British 
Columbia
12. Amery D. WuPratt’s importance measures in factor analysis: a new technique for interpreting oblique factor models. (2008)University of 
British 
Columbia
13. Martin A. GuhnExamining interactions between social and cultural child and neighborhood characteristics on children’s developmental outcomes: studies from the population-based early development Instrument project. (2009)
(HDLC, co-supervisor with Prof. Hillel Goelman)
University of 
British 
Columbia
14. David W. NordstokkeInvestigating tests for equal variances. (2009)University of 
British 
Columbia
15. Barry A. ForerValidation of multilevel constructs: methods and empirical findings for the Early Development Instrument. (2009)University of 
British 
Columbia
16. Zhen LiImpact of differential item functioning on statistical conclusions. (2009)University of 
British 
Columbia
17. Anne M. GadermannThe Satisfaction with Life Scale adapted for Children: investigating the structural, external, and substantive aspects of construct validity. (2009)University of 
British 
Columbia
18. Cornelia ZeisserValidating policy ratings: the substantive aspect of construct validity for ratings of school tobacco policies. (2010)University of 
British 
Columbia
19. Asa-Sophia MaglioEffectiveness of an integrated mindfulness-based anxiety group intervention with university students who self-report anxiety: a small-N, mixed method design. (2011)
(Counseling  Psychology, co-supervisor with Prof. Bill Borgen)
University of 
British 
Columbia 
20. Yan LiuDocumenting the impact of outliers on decisions about the number of factors in exploratory factor analysis. (2011)University of 
British 
Columbia
21. Tavinder ArkOrdinal generalizability theory using an underlying latent variable framework. (2015)University of 
British 
Columbia
22. Alkhalaf, ArwaThe impact of predictor variable(s) with skewed cell probabilities on the Wald test in binary logistic regression. (2017)University of 
British 
Columbia
23. Oscar Olvera AstiviaOn Monte Carlo simulation algorithms for research in psychometrics. (2017)University of 
British 
Columbia
24. Yue (Michelle) ChenOn the impact of negatively keyed items on the assessment of the unidimensionality of psychological tests and measures. (2017)University of 
British 
Columbia
25. Pamela R. Woitschach MendozaEvaluaciones Educativas A Gran Escala En Latinoamerica: TERCE (2018)
Large-Scale Educative Assessments In Latin America: TERCE  (2018)

(co-supervisor with Prof. Rosario Martinez-Arias, Ruben Fernandez-Alonso, Jose Muniz-Fernandez)
Universidad Complutense
De Madrid, Departamento de
PsicobiologIa y Metodologia en
Ciencias del Comportamiento, Spain
26. Gordana RajlicViolations of unidimensionality and local independence in measures intended as unidimensional: assessing levels of violations and the accuracy in unidimensional IRT model estimates. (2019)University of 
British 
Columbia
27. Nathan D. RobersonOn the measurement of social belonging and its connection to migration background. (2020)University of 
British 
Columbia
28. Mauricio Coronel VillalobosImpact of scoring and response format on inferences from electronic surveys for rating scales. (2020)University of 
British 
Columbia
29. Niyati Kasana(on-going)University of 
British 
Columbia
30. Keren Roded(on-going)University of 
British 
Columbia
31. Sarah Lynch(on-going)University of 
British 
Columbia

Post Doctoral Research Fellows

NameFundingYear
Talha GöktentürkScientific and Technical Research Council of Turkey, TUBITAK2022- on-going
Pamela R. Woitschach MendozaUBC-Paragon Research Initiative2019- 2022
Xijuan (Cathy) ZhangUBC-Paragon Research Initiative2021
(January 1-June 30)
Oscar Olvera AstiviaUBC-Paragon Research Initiative2018-2019
Ed KrocUBC-Paragon Research Initiative2016- 2018
Junli (Julie) WeiUBC-Paragon Research Initiative2016- 2017
Ignacio PedrosaSpanish Government2015
Yan LiuUBC; Prof. Zumbo from CIHR & SSHRC research grant funds2012-2013
Eric ChanUBC; Prof. Zumbo from CIHR & SSHRC research grant funds2010-2013
 Martin GuhnMichael Smith Foundation for Health Research (co-supervised with Dr. Clyde Hertzman) 2009-2012
Bradley FranklinNSERC Post-doctoral Fellow2000-2001

Visiting Scholars


Dr. Oscar Olvera Astivia (2020, 2021, 2022)

Dr. Paula Elosua, University of the Basque Country, Spain (2016)

Dr. Bryan Maddox, University of East Anglia, UK (2015; 2016)

Dr. Shoichi Matsumura, Ryukoku University, Japan (2007-2008)

Dr. Sean Mulvenon, University of Arkansas, USA (2005)

Dr. Yuko Shimizu, Ritsumeikan University, Japan (2003-2004)

(Pre-)Doctoral Visiting Scholars


Pamela R. Woitschach Mendoza, Complutense University of Madrid, Spain (2017-2019)

Donna (Naghmeh) Jahangir-Tafreshi, Simon Fraser University (2017-2018)