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Journal of Pediatric Psychology 7(4) pp. 355-360, 1982
© 1982 Society of Pediatric Psychology

research-article

Length of Labor and Sex of Offspring1

Carol Nagy Jacklin2 and Eleanor M. Maccoby

Stanford University

2All correspondence should be addressed to Carol Nagy Jacklin, Department of Psychology, Stanford University, Stanford, California 94305.

Length of labor was found to be longer for mothers giving birth to boys than for mothers giving birth to girls in four independent groups born at two hospitals. Birth weight, parity, and hospital also related to labor length. However, when these factors were held constant, sex of newborn remained a predictor of length of labor.


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