Evaluation of Israeli students, 392 in grades 7-9 and 381 in grades 10-12, in the domain of literature supported the construct validity of the 4 X 4 Structure of Giftedness Model, in which giftedness is conceptualized in 4 categories of general and specific intellectual ability and original thinking and 4 ordered ability levels embedded in a…

Psychometric theory has been one of psychology's stronger foundations and a major contributor to the recognition of psychology as a scientific discipline. Basic principles of psychometric theory led to the development of respected intelligence tests and large and comprehensive testing and assessment programs. This paper synthesizes major…

This paper argues that using intelligence as an aptitude benchmark in defining reading disability conceals unsupported assumptions about educational potential and makes it difficult to differentiate the cognitive characteristics of dyslexic children from those of other poor readers. The use of a more educationally relevant aptitude measure such as…

The Cattell Culture Fair Intelligence Test (CCFIT) was administered to a large sample of American, Nigerian, and Indian adolescents, and item data were examined for cultural bias. The CCFIT was designed to measure fluid intelligence, which is not influenced by cultural differences. Four different item analysis techniques were used to determine…