The investigation examined the "Wide Range Achievement Test" (WRAT) and its subtests (spelling, reading, and arithmetic), as well as possible differences attributable to the factors of sex, with the "Chicago Non-Verbal" (CNV) as a criterion variable. The 1970 study encompassed 72 Indian students (with a mean chronological age…

In this 4-part study, 1970 test data from 45 American Indian youth (aged 11-15) attending Riverside Summer Institute in Anadarko, Oklahoma, were examined. Part 1 of the study sought to identify the pattern of strengths and weaknesses on the "Wechsler Intelligence Scale for Children" (WISC) of Indian students with average intelligence and…

Tests of spatial ability were analyzed for their analog (visuospatial) and nonanalog (verbal reasoning) components, using factor analyses of items and test scores. The self-selected sample consisted of over 2000 clients (average age about 26 or 27) employing the Johnson O'Connor Research Foundation's aptitude evaluation services in 12 metropolitan…

The Picture Completion subtest of the Wechsler Preschool and Primary Scale of Intelligence was included in this study as a measure of analytic functioning, an aspect of psychological differentiation. Twelve of the 23 items on the test were taken from the WISC and 11 were new. The child is shown a series of 23 pictures, each of which has some…