The Preschool Academic Skills Test was developed from an analysis of first-grade reading and mathematics materials to identify those behaviors that were assumed to be in students' repertoires prior to first grade. The 105 items are grouped in 10 subtests: Vocabulary, Color Naming, Classification, Functional Relationships, Visual Matching, Auditory…

Monte Carlo simulation procedures were used to study the psychometric characteristics of two two-stage adaptive tests and a conventional "peaked" ability test. Results showed that scores yielded by both two-stage tests better reflected the normal distribution of underlying ability. Ability estimates yielded by one of the two stage tests…

This collection of papers, concerned with the nature and theory of intelligence, forms part of a project to integrate test and factor theory with the empirical, functional relationships involving standard intelligence tests. The project will render more objective the use of factor analysis in personnel research. A definition of intelligence…