Experience with a visual-spatial language may influence certain cognitive processes (Keehner and Gathercole 2007). Spatial ability is an important cognitive skill (Linn and Petersen 1985). Some research has found that deaf signers outperform hearing nonsigners on certain spatial tasks (e.g., Emmorey, Kosslyn, and Bellugi 1993) and that hearing…

The Cattell-Horn-Carroll (CHC) model is a comprehensive model of the major dimensions of individual differences that underlie performance on cognitive tests. Studies evaluating the generality of the CHC model across test batteries, age, gender, and culture were reviewed and found to be overwhelmingly supportive. However, less research is available…

Differential Aptitude Test (DAT) scores of 2,622 students who were tested in the 8th, 9th, or 10th grades and who later entered a Minnesota area vocational-technical school were analyzed to determine the relationships between test scores and training program entered. Results are presented. (Author)

This study reports, for a group of 257 boys and a group of 286 girls, factor analyses of 43 Project TALENT aptitude and information tests, together with 48 tests from three multiple-aptitude batteries and one high-school achievement battery (The Flanagan Aptitude Classification Tests, Differential Aptitude Tests, General Aptitude Test Battery, and…

Test performance of high school students on the Armed Services Vocational Aptitude Battery (ASVAB), the General Aptitude Test Battery (GATB), and the Differential Aptitude Tests (DAT) was compared. The design of the study provided for information on test intercorrelations, prediction equations for the ASVAB tests from the commercial tests and…