The essay integrates the psychometric intelligence approach with the cognitive-developmental approach or the stage theory erected by Piaget and his disciples. The latter led to Piagetian Cross-Cultural Psychology and the accumulation of an immense body of data. It shows that different IQ levels are indicative of the peculiar stages of cognitive…

Data suggest an ability to use concrete-operational reasoning is not required for doing complex arithmetic, even though it may be necessary for learning these arithmetic skills. (Authors)

Results of this study suggest that availability of a consistent set of color labels is related more closely to recognition accuracy than is the spontaneous production of labels in a color recognition task. (Authors)

Females cheated in response to consistently unfavorable self-perceptions, while males were influenced by immediate situational factors. (Authors)

Investigation combined two heretofore unconnected research areas: the newly structured operation of divergent thinking and the older domain of family resemblances. (Author)

Around one-third of pupils in British schools take no part in extra-curricular activities. This article looks at the adequacy of extra-curricular provision from the pupil's viewpoint. (Author/MB)

Current estimates of the contribution of education to economic growth have been questioned because they ignore the interaction of education with ability. Whether the neglect of ability differences in the analyses of the income-education relationship results in estimates which are too high is considered in this paper, using a 1964 sample of U.S.…

A single administration of the reversal learning paradigm is not a sufficient basis for determining either a given subject's choice of option or his behavior on its constituent learning measures. This conclusion raises many questions about past research relating to mediation theory, since this paradigm has been the basic one employed. (Authors)

Results show that the retarded group was significantly more cooperative than the nonretarded group, and the 6-7 year retarded group was more cooperative than the 11-12-year retarded group. (Authors/CB)

A reanalysis of data from three previously published studies on whether creativity is content general or content specific suggest that, contrary to the results of recent research, a content-general factor may explain 40-50% of the variance in creativity checklist scores. Results are analyzed in light of other studies. (Author/CR)

The history of the study of human mental ability is an example of the dialectic in social science between those who interpret data within the framework of existing social inequities and those who look for perspectives that might eventually dissolve inequities. The dedication of Henry Herbert Goddard to a belief in the scientific proof of…

A STUDY INVESTIGATED THE RELATION BETWEEN PERFORMANCE ON LEARNING AND PROBLEM-SOLVING TASKS AND LEVEL OF INTELLIGENCE. PERFORMANCE WAS MEASURED ACROSS A SERIES OF 10 LEARNING AND PROBLEM-SOLVING TASKS PRESENTED TO SUBJECTS IN A SERIES OF SIX FILMS SHOWN IN A CLASSROOM. THE SUBJECTS WERE 275 JUNIOR HIGH SCHOOL STUDENTS AND 109 FOURTH GRADERS…