Summarizes data related to the stability and variation in the norms for the Raven's Progressive Matrices Test (J. Raven, 1936), a measure of basic cognitive functioning, for different cultural, ethnic, and socioeconomic groups worldwide and within countries. Also considers variation over time and suggests an explanation for the variation in norms…

To examine the child variables which may affect the validity of a screening test in a heterogeneous kindergarten, 64 kindergarten children attending an international school in Taipei, Taiwan, were screened with the Developmental Indicators for the Assessment of Learning - Revised (DIAL-R). Thirty subjects were Caucasian, 21 were Oriental, and 11…

Research is reported on four tests commonly used in South Africa to select apprentices, the Intermediate Mental Alertness Test, the High Level Figure Classification Test, the Blox Test, and the Mechanical Comprehension Test. Samples were as follows: (1) 206 Asian, 208 Black, 102 Coloured, and 99 White mostly male applicants for sugar industry…

The subject of this dissertation is the examination of differential item functioning (DIF) through the use of loglinear Rasch models with latent classes. DIF refers to the probability that a correct response among equally able test takers is different for various racial, ethnic, and gender groups. Because usual methods of detecting DIF give little…