An information-processing analysis of intelligence proposed by Eysenck and Furneaux was examined in an experimental study of semantic categorization and free recall by 11 year old children of varying intelligence. Although the general level of the reaction time in the categorization task was inversely related to intelligence, predicted relationships with error frequency and the slope of the memory search function were not obtained. The subjects' continuance in a free recall task was also unrelated to their intelligence. Some implications of these results are discussed.