• FrontMatter,
• Contents,
• Acknowledgments,
• 1 Introduction,
• 2 Structure of Gelada Populations,
• 3 Ecological Constraints,
• 4 Demographic Processes,
• 5 Social Structure of Reproductive Units,
• 6 Constraints on Female Reproduction,
• 7 The Female's Socio- Reproductive Strategies,
• 8 A Decision Model of Female Reproductive Strategies,
• 9 The Female's Tactical Options,
• 10 The Male's Loyalty Problem,
• 11 Rules and Decisions in Harem Acquisition,
• 12 An Economic Model of Male Reproductive Strategies,
• 13 Tactical Options Open to Males,
• 14 Dynamics of Strategy Choice,
• 15 Two Final Problems About Males,
• 16 Evolutionary Decisions Under Conflicts of Interest,
• References,
• Author Index,
• Subject Index,

Robin Dunbar uses economic models to explore the social behavior of the gelada baboon (Theropithecus gelada), a unique species, whose social system is one of the most complex among the primates. His work illustrates the value of an approach that views social behavior as being ultimately concerned with reproduction and with the maximizing of an individual's contribution to its species' gene pool.
Originally published in 1985.
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