Abstract
A new hypothesis is proposed to explain the perennially enlarged breasts of human females. The nubility hypothesis proposes that hominid females evolved protruding breasts because the size and shape of breasts function as an honest signal of residual reproductive value. Hominid females with greater residual reproductive value were preferred by males once reliable cues to ovulation were lost and long-term bonding evolved. This adaptation was favored because female-female competition for investing males increased once hominid males began to provide valuable resources.
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Frank Marlowe is research has focused on paternal care and mating effort among Hadza hunter-gatherers. He is also interested in mate preferences, mating systems, and life history theory.
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Marlowe, F. The nubility hypothesis. Hum Nat 9, 263–271 (1998). https://doi.org/10.1007/s12110-998-1005-2
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DOI: https://doi.org/10.1007/s12110-998-1005-2