The Effect of Incentives upon Information Gathering in Diagnostic Problem Solving

Tasks reflecting both Level I and Level II abilities as defined by Jensen (6) were performed with more accuracy by preschool children identified in the upper SES level. This performance trend remained the same even after the variable of IQ was controlled for by covariance for the SES levels involved in the study.

These results may reflect a general state of cognitive deprivation for children in the lower SES level as opposed to a specific Level II deficit. However, the performance on Subtest 2 was not significantly different for the two socioeconomic groups involved. This subtest involves choosing, from an array of four pictures of objects, the picture that is conceptually similar to a stimulus picture presented to the youngster. This is supposedly a Level II task. Therefore, some doubt is cast upon the notion of the generic differences between Level I and Level II abilities. At least for the sample in this study the Level I-Level II dichotomy has not been substantiated, and the corollary Arthur Jensen (6) hypotheses have equivocal substantiation.