It is demonstrated that the popular three-parameter logistic model can lead to markedly inaccurate individual ability level estimates for mixture populations. A theoretically and empirically important setting is initially considered where (a) in one of two subpopulations (latent classes) the two-parameter logistic model holds for each item in a…

Indicates that order of presentation determines the amount of attention students pay to questions asked by other students. Attentiveness is increased if the instructor has not previously lectured on similar information. Bibliography. (RW)

The author attacks not only the racism inherent in existing IQ tests, but the very concept of a standardized intelligence test, which, he asserts, lacks certain basic criteria of consistency and validity necessary to a scientific device. Part of a theme issue on intelligence. (SJL)

This paper reports two experiments whose purpose was to relate two bodies of research on anxiety: test and trait-state anxiety. It was reasoned that state anxiety measures obtained in an evaluation testing condition should be more similar to test anxiety than state anxiety measures obtained in non-evaluative situations, such as a game in Study I…

A 15-MONTH EVALUATION RESEARCH STUDY OF THE 1965 SUMMER HEAD START PROGRAMS WAS CONDUCTED THROUGHOUT THE STATE OF TEXAS. A SCHEMATIC MODEL OF INTERACTING FACTORS OPERATING THROUGH HEAD START PROGRAMS TO PRODUCE AND PREDICT CHANGES IN EDUCATIONAL DEVELOPMENT AND IN OUT-OF-SCHOOL ENVIRONMENT WAS DEVELOPED. THIS MODEL GENERATED THE EMPIRICAL…

This paper summarizes a report designed to provide the National Science Board Commission with information about recent advances in cognitive/behavioral science relevant to mathematics, science, and technology education, as well as prospective contributions from these fields if adequate levels of support are available. Following a summary…

This paper reports on a large-scale project of research and evaluation of a program for disadvantaged minority group students conducted by the Center for Educational Opportunity at the Claremont Colleges. The Program of Special Directed Studies for Transition to College (PSDS), a five-year experimental project, is aimed at providing a four-year,…