Hagen,E.H. & Barrett,H.C. (2007)
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Perinatal sadness among Shuar women: Support for an evolutionary theory of psychic pain
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Hagen,E.H., Barrett,H.C., & Price,M.E. (2006)
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Do human parents face a quantity-quality tradeoff? Evidence from a Shuar community
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Hess,N.H. & Hagen,E.H. (2006)
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Psychological adaptations for assessing gossip veracity
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McElreath,R., Clutton-Brock,T.H., Fehr,E., Ressler,D.M., Hagen,E.H., Hammerstein,P., & [et-al]. (2003)
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Group report: The role of cognition and emotion in cooperation
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