Papers

Group Competition, Reproductive Leveling, and the Evolution of Human Altruism, by Samuel Bowles

Power, Fitness Rents, and Reproductive Skew: An Example, by Samuel Bowles

Cooperative Behaviour and Cooperative Breeding: What Constitutes an Explanation?, by Hanna Kokko

Male Competition and Paternity in Wild Chimpanzees of the Tai Forest, by Christophe Boesch, Gregoire Kohou, Honora Nene and Linda Vigilant

Demography of Male Reproductive Queues in Cooperatively Breeding Superb Fairy-Wrens Malurus cyaneus, by Andrew Cockburn, Helen L. Osmond, Raoul A. Mulder, Michael C. Double, and David J. Green

Can We Measure the Benefits of Help in Cooperatively Breeding Birds: The Case of Superb Fairy-Wrens Malurus cyaneus?, by Andrew Cockburn, Rachel A. Sims, Helen L. Osmond, David J. Green, Michael C. Double, and Raoul A. Mulder

Male Chimpanzees Exchange Political Support for Mating Opportunities, by Kimberly G. Duffy, Richard W. Wrangham, and Joan B. Silk

Egalitarianism in Female African Lions, by Craig Packer, Anne E. Pusey, and Lynn E. Eberly

Parental Investment, Sexual Selection and Sex Ratios, by Hanna Kokko and Michael D. Jennions

Comparative Tests of Reproductive Skew in Male Primates: The Roles of Demographic Factors and Incomplete Control, by Nobuyuki Kutsukake and Charles L. Nunn

A Molecular Genetic Analysis of Kinship and Cooperation in African Lions, by C. Packer, D. A. Gilbert, A. E. Pusey, and S. J. O'Brien

Conflict and Cooperation in Wild Chimpanzees, by Martin N. Muller and John C. Mitani

Foraging Strategies as a Function of Season and Rank Among Wild Female Chimpanzees (Pan troglodytes), by Carson M. Murray, Lynn E. Eberly, and Anne E. Pusey

Dominance Rank Influences Female Space Use in Wild Chimpanzees, Pan troglodytes: Towards an Ideal Despotic Distribution, by Carson M. Murray, Sandeep V. Mane, and Anne E. Pusey

Comparative Methods for Studying Primate Adaptation and Allometry, by Charles L. Nunn and Robert A. Barton

A Model for Leveling Coalitions Among Primate Males: Toward a Theory of Egalitarianism, by Sagar A. Pandit and Carel P. van Schaik

The Influence of Dominance Rank on the Reproductive Success of Female Chimpanzees, by Anne Pusey, Jennifer Williams, and Jane Goodall

Mating Conflict in Primates: Infanticide, Sexual Harassment and Female Sexuality, by Carel P. van Schaik, Bauri R. Prandhan, and Maria A. van Noordwijk

The Inheritance of Inequality, by Samuel Bowles and Herbert Gintis

Altruism in Insect Societies and Beyond: Voluntary or Enforced?, by Francis L. W. Ratnieks and Tom Wenseleers

Reproductive Skew Among Males in a Femaledominated Mammalian Society, by Anne L. Engh, Stephan M. Funk, Russell C. Van Horn, Kim T. Scribner, Michael W. Bruford, Scot Libants, Micaela Szykman, Laura Smale, and Kay E. Holekamp

Courtship and Mating in Free-Living Spotted Hyenas, by Micaela Szykman, Russell C. Van Horn, Anne L. Engh, Erin E. Boydston, and Kay E. Holekamp

Sexual Selection in Males and Females, by Tim Clutton-Brock

Sex Differences in Ageing in Natural Populations of Vertebrates, by T. H. Clutton-Brock and K. Isvaran

Sexual Selection in Wild Baboons: From Mating Opportunities to Paternity Success, by Susan C. Alberts, Jason C. Buchan, and Jeanne Altmann

Queuing and Queue-Jumping: Long-Term Patterns of Reproductive Skew in Male Savannah Baboons, Papio cynocephalus, by Susan C. Alberts, Heather E. Watts, and Jeanne Altmann