Accession Number : AD0624901

Title :   A MODEL FOR THE GENERALIZABILITY OF TESTS CONSTRUCTED BY STRATIFIED SAMPLING.

Descriptive Note : Technical rept. (Doctoral thesis),

Corporate Author : ILLINOIS UNIV URBANA DEPT OF PSYCHOLOGY

Personal Author(s) : McKie,Douglas

Report Date : SEP 1965

Pagination or Media Count : 156

Abstract : A mathematical model is constructed to investigate the generalizability of tests considered to be constructed by sampling from a stratified universe of items. Items are not assumed to be equivalent, nor test-forms paralled. The basic assumptions are those of Rajaratnam, Cronbach, and Gleser; but though the mathematical development is quite different, the model generates generalizability coefficients whose estimates from test data are precisely those of Rajaratnam et al. They are stratified variants of the Kuder and Richardson formulas 20 and 21. Order relations among them are derived, and certain of their properties are investigated. Predictions from the model are shown to have empirical support. The study thus confirms the results of Rajaratnam et al., and sheds additional light on the behavior of the generalizability coefficients discussed by them. (Author)

Descriptors :   (*MATHEMATICAL MODELS, PSYCHOLOGICAL TESTS), (*PSYCHOLOGICAL TESTS, MATHEMATICAL MODELS), RELIABILITY, FACTOR ANALYSIS, CORRELATION TECHNIQUES, SAMPLING

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE