1. Good lamalera whale hunters accrue reproductive benefits (M.S. Alvard). 2. Why do foragers share and shares forage? Explorations of social dimensions of foraging (M. Gurven, K. Hill, F. Jakugi). 3. Reconsidering the cost of childbearing: The timing of childrens helping behavior across the life cycle of Maya families (K.L. Kramer). 4. Burden transport: When, how and how much? (P.A. Kramer). 5. Do women really need marital partners for support of their reproductive success? The case of the Matrilineal Khasi of N.E. India (D.L. Leonettia, D.C. Nath, N.S. Hemam, D.B. Neil). 6. Maternal nutrition and sex ratio at birth in Ethiopia (R. Mace, J. Eardley). 7. What explains Hadza food sharing? (F.W. Marlowe). 8. Large-scale cooperation among Sungusungu Vigilantes of Tanzania: Conceptualizing micro-economic and institutional approaches (B. Paciotti, C. Hadley). 9. The behavioral ecology of female genital cutting in Northern Ghana (L.L. Reason). 10. Maintaining the matriline: Childrens birth order roles and educational attainment among Thai Khon Muang (L.R. Taylor). 11. Embodied capital and heritable wealth in complex cultures: A class-based analysis of parental investment in urban South India (M.K. Shenk). 12. Height, marriage and reproductive success in Gambian women (R. Sear, R. Mace, N. Allal, I.A. McGregor). 13. Risk perception and resource security for female agricultural workers (K. Snyder). 14. Ideology, religion, and the evolution of cooperation: Field experiments on Israeli Kibbutzim (R. Sosis, B.J. Ruffle). 15. Does the occurrence and duration of health insults among Shiwiar Forager-Horticulturalists indicate that health care provisioning reduces juvenile mortality? (L.S. Sugiyama). 16. Giving, scrounging, hiding, and selling: Minimal food sharing among Mikea of Madagascar (B. Tucker).