Birth Order and Sex of Siblings in a Sample of Lesbians and Non-Lesbians

Abstract
Data from 217 Lesbians and 231 non-Lesbians, displaying birth order among male and female siblings, reveal proportionately more Lesbians who are “only” or first-born of two siblings or who are fifth, sixth, or seventh in such large families; and fewer Lesbians among third child of three-sibling families.

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