Tiffany Whittaker

Terminal Degree

PhD, University of Texas at Austin, 2003

MS, University of Texas at San Antonio, 1998

BA, University of Texas at San Antonio, 1995

Representative Publications

Worthington, R. W., & Whittaker, T. A. (2006). Using exploratory and confirmatory factor analysis in scale development research: A content analysis and recommendations for best practices. The Counseling Psychologist, 34(6), 806-838.

Whittaker, T. A., & Stapleton, L. M. (2006). The performance of cross-validation indices used to select among competing covariance structure models under multivariate nonnormality. Multivariate Behavioral Research, 41(3), 295-335.

Pituch, K. A., Whittaker, T. A., & Stapleton, L. M. (2005). A comparison of methods to test for mediation in multisite experiments. Multivariate Behavioral Research, 40(1), 1-23.

Whittaker, T. A., Fitzpatrick, S. J., Williams, N. J., & Dodd, B. G. (2003). IRTGEN: A SAS macro program to generate known trait scores and item responses for commonly used item response theory models. Applied Psychological Measurement, 27(4), 299-300.

Whittaker, T. A., Fouladi, R. T., & Williams, N. J. (2002). Determining predictor importance in multiple regression under varied correlational and distributional conditions. Journal of Modern Applied Statistical Methods, 1(2), 354-366.

Boards, Committees and Associations

• Member of the Editorial Board for the Journal of Counseling Psychology
• American Educational Research Association

Research Interests and Expertise

The evaluation of statistical procedures under various simulated conditions; structural equation modeling; multilevel modeling; psychometrics.