Recent research on sexual orientation and fraternal birth order.(a review of the research; includes references)

From: The Canadian Journal of Human Sexuality | Date: June 22, 2002| Author: Bogaert, Anthony F. | Copyright information

ABSTRACT: Number of older brothers (or "fraternal" birth order) predicts a homosexual orientation in men but not in women. In this paper, I review recent research on the fraternal birth order effect. For example, I present a recent study using two national probability samples that indicates that number of older brothers increases homosexual attraction but not homosexual behaviour/experience in men. In addition, I present a study using Canadian data indicating that fraternal birth o...

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