Research Interests
I'm a statistician with research interests in
- Linear Models
- Multivariate Analysis
- Latent Variable Methods
- Bayesian Statistics
- Applications to Behavioral Sciences.
Documents, data files, and software relating to some of my research can be
downloaded. Help yourself.
- "Analysis of Two-Factor
Interactions in Fixed Effects Linear Models," Journal of
Educational Statistics, 1993, 18, 1-40.
- "MSU Rurality Index: Development
and Evaluation," Research in Nursing and Health, 1995, 18,
453-464. This work was done jointly with Clarann Weinert.
- "Null Distribution of a Statistic for Testing
Sphericity and Additivity: A Jacobi Polynomial Expansion," Applied
Statistics, 1993, 42, 567-584.
- "Response Transformations in Repeated
Measures and Growth Curve Models,"Communications in
Statistics---Theory and Methods, 29, 699-733. This work
was done jointly with Charles Todd and Scott Hyde.
- "A Generalized Solution for Approximating
the Power to Detect Effects of Categorical Moderator Variables Using
Multiple Regression,"Organizational Research Methods, 2001,
4, 291-323. This work was done jointly with Herman Aguinis and
Charles Pierce.
- "Spectral Models for Covariance Matrices,"
Biometrika, 2002, 89, 159-182.
- "Principal Component Models for Correlation
Matrices," Biometrika, 2003, 90, 679-701.
- "Accurate Confidence
Intervals in Regression Analyses of Non-Normal Data,"
Annals of the Institute of Statistical Mathematics, in press.
- "Second-Order Accurate Inference on
Eigenvalues of Covariance and Correlation Matrices,"
Journal of Multivariate Analysis, 2005, 96<\B>, 136-171.
- "Exploratory and Confirmative Principle
Components Analysis,"
work in progress.
- "An Implicit Function Approach to
Constrained Optimization with Applications in Statistics,"
work in progress.
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