This article describes a device used to array the pieces of the Object Assembly Test, a subscale of the Wechsler Intelligence Scales for Children, in exact standardized order in less time than is now needed and without a screen, thus guaranteeing that the subject will have no previous experience with the pieces. (Author/BY)

The present study was designed to (1) investigate the changes in the structure and organization of mental abilities during childhood and adolescence of 514 students as sampled by the Wechsler Intelligence Scale for Children (5 to 15 years) and the Wechsler Adult Intelligence Scale (16 to 18 Years) and (2) interpret, and possibly modify, the…

The rationale and development of a new series of motion picture tests of perceptual abilities of young children are described, and preliminary data regarding their reliability and validity are presented. The data suggests that the film tests are promising new perceptual measurement instruments. (MS)