Peter H. Schönemann, Professor Emeritus, Department of Psychological Sciences,  Purdue University,  Ph.D Illinois, 1964; General Psychology

(with wife Roberta. Photo courtesy S. Nishisato, Toronto, Canada).
 

(1) Multivariate methods: Path analysis, factorial definitions of "intelligence," factor indeterminacy,  statistical power in confirmatory factor analysis,  Spearman Hypothesis artifact. 

(2) Multidimensional scaling and measurement: Unfolding, subjective metrics models,  multidimensional psychophysics,  metrics for bounded response scales.

(3) Quantitative behavior genetics: Variance component models for  heritability indices based on twin data, "non-shared environment". 

(4) Test theory: Hit-rate bias, base-rate problem, minority discrimination. 

(5) Mathematical tools for social scientists: Matrix derivatives, correlation and convolution algebra.