Ability tests play an important role in the assessment programs of many schools. However, the inferences about ability made from such tests presume that students understand the tasks they are attempting. Task familiarity can vary by student as well as by format. By design, nonverbal reasoning tests use formats that are intended to be novel. The…

Certain aspects of the performance of adults on verbal reasoning tasks were studied. The four main objectives of the study were: to develop a self-instructional booklet for use in teaching adults the functional rules of classification; to construct a reliable instrument for use in assessing the capability of adults to perform verbal classification…