Persons representing the extremes of intelligence cannot be included in the same study unless they are approximately equated on mental age, in which case the relative performances of the extreme groups can provide useful information about the nature of intelligence. (Author/RD)

A 76-item test of intellect-related personality traits was developed and administered to 46 gifted 13 year olds, 51 undergraduates, and 53 seventh and eighth graders. Three component-based traits were obtained: intellectual absorption, apathy, and pleasure. These traits were found to be related to intellectual performance. (TJH)

Do stage-related patterns of early cognitive development reported for normally developing children also characterize at-risk and handicapped children when mental age organization of data is used? Mental age predicted Piagetian-based cognitive levels one to three but did not predict highest-level symbolic functioning in 95 handicapped children.…