People with autism spectrum condition (ASC) perform well on Raven's matrices, a test which loads highly on the general factor in intelligence. However, the mechanisms supporting enhanced performance on the test are poorly understood. Evidence is accumulating that milder variants of the ASC phenotype are present in typically developing individuals,…

Various experiments demonstrated that the difficulty level of several performance-type intelligence test tasks is determined directly by stimulus and task variables that vary the information to be processed. The implications of these findings for intelligence and the problems of an experimental approach to the measurement of intelligence are…

Examined the pattern of verbal subscale scores on the Wechsler Adult Intelligence Scale and Wechsler Intelligence Scale for Children-Revised given to college students (N=129) and elementary students (N=383). Results showed a triangle pattern (Comprehension scores higher than both Vocabulary and Information) that begins to appear at the…