Sex Differences in Primary Process Thinking and Flexibility in Problem-Solving in Children

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Abstract
The relationship between primary process thinking and flexibility in problem-solving was investigated. Specifically, it was hypothesized from psychodynamic theory that primary process integration on the Rorschach (Holt's scoring system) would be positively related to the capacity to shift problem-solving strategies on the Luchins' water-jar test. The Rorschach and water-jar test were individually administered to 47 third grade children. The hypothesis was confirmed for boys in that the Adaptive Regression score on the Rorschach was significantly related to performance on Luchins' water-jar test (r = .64, df = 16, p < .01). This relationship remained significant when IQ was partialed out (r = .59, df = 16, p < .01). There was no relationship between primary process integration and flexibility in problem solving for girls (r = .02, df = 26, NS). These results and sex differences were replicated with a second sample of children. Consistent sex differences also were found in the amount of primary process material expressed. Girls showed a significantly smaller percentage of primary process material than boys. Primary process integration was also related to Iowa test achievement scores, independent of IQ. This finding is consistent with previous studies.

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