to Intraindividual Variation of Primate Behavior -- The Costs and Benefits of Behavioral Flexibility to Inclusive Fitness: Dispersal as an Option in Heterogeneous Regimes -- Primate Signatures and Behavioral Flexibility in Heterogeneous Regimes -- Social Cognition and Behavioral Flexibility: Categorical Decision-Making as a Primate Signature -- Female Primates as “Energy-Maximizers” in Heterogeneous Regimes -- Male Primates: “Time-Minimizers” in Heterogeneous Regimes -- Intersexual Interactions in Heterogeneous Regimes: Potential Effects of Antagonistic Coevolution in Primate Groups -- Sociosexual Organization and the Expression of Behavioral Flexibility -- Behavioral Flexibility: Interpretations and Prospects.