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Sources Discussed in Video
Hughes, S.M. & Gallup, G.G. (2003). Sex differences in morphological predictors of sexual behavior: Shoulder to hip and waist to hip ratios. Evolution and Human Behavior, 24, 173-178.
Zahavi, A. (1974). Mate selection - A selection for a handicap. Journal of Theoretical Biology, 53, 205-214.
Sainoa, N., Moller, A.P. & Bolzerna, A.M. (1994). Testosterone effects on the immune system and parasite infestations in the barn swallow (Hirundo rustica): An experimental test of the immunocompetence hypothesis. Behavioral Ecologyhttp://beheco.oxfordjournals.org/content/6/4/397.abstract