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Probably because of the chin's exclusivity, many evolutionary scenarios have been proposed to explain its origins. To date, researchers have developed adaptive hypotheses relating chins to speech, mastication, and sexual selection; still others see it as a structural artifact tangentially related to complex processes involving evolutionary retraction of the midfacial skeleton. Consensus has remained elusive, partly because hypotheses purporting to explain how this feature developed uniquely in modern humans are all fraught with theoretical and\/or empirical shortcomings. Here we review a century's worth of chin hypotheses and discuss future research avenues that may provide greater insight into this human peculiarity.<\/jats:p>","DOI":"10.1002\/evan.21471","type":"journal-article","created":{"date-parts":[[2016,1,22]],"date-time":"2016-01-22T14:17:05Z","timestamp":1453472225000},"page":"20-35","source":"Crossref","is-referenced-by-count":21,"title":["The enduring puzzle of the human chin"],"prefix":"10.1002","volume":"25","author":[{"given":"James D.","family":"Pampush","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David J.","family":"Daegling","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2016,1,22]]},"reference":[{"key":"e_1_2_8_2_1","first-page":"599","article-title":"The story of the chin","author":"Robinson L","year":"1914","journal-title":"Annu Rep Board Regents Smithsonian 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