When administered to 125 deaf youngsters, ages 5-12, the WISC performance test had good reliability and predictive validity, but administration to some young or physically handicapped children proved difficult. The Colored Progressive Matrices proved satisfactory with older subjects, but its suitability for younger deaf children was not confirmed.…

The Beery Developmental Test of Visual Motor Integration consists of 24 geometric forms that are to be copied into a test booklet. This study demonstrated the ability of the test to predict academic achievement in preschool children. (Author/JKS)

For a sample of seven and eight-year old Nigerian elementary pupils, validity coefficients of a modified matrix completion instrument entitled Modified Hall's Matrices, were determined relative to two achievement tests. The coefficients were quite high. (Author/JKS)

Random polygons were used as stimuli in a two-choice multiple discrimination learning paradigm designed to test individual learning ability. A nonverbal test was developed in order to avoid the cultural and racial bias which, according to the author, is inherent in verbal tests. Information processing rate (IPR) was used as the measure of learning…