SIBLING CONSTELLATION, CREATIVITY, IQ, AND ACADEMIC ACHIEVEMENT.

Sibling constellation factors were related to measures of creativity (Minnesota Tests of Creative Thinking), IQ, reading, arithmetic, and language achievement in a sixth-grade population using analysis of variance. In the first portion of the study, family size was found to be unrelated to ability and achievement (N = 140). The main portion of the study investigated birth order sex, sex of sibling, and age difference in the 2-child family (N = 80), and found that verbal creative abilities, reading, and arithmetic achievement were enhanced for Ss with siblings of like sex close in age. In the final portion of the study, birth order was found to be unrelated to ability and achievement in 3- and 4-child families (N = 144), and sibling sex was found to be important in the 3-child family where Ss with 2. brothers had poorer IQ and reading scores than Ss with at least one sister (N = 96). [ABSTRACT FROM AUTHOR]