SOCIOBIOLOGY




  • SOCIOBIOLOGY:  the study of social behavior
  • Social behavior:   behavior that influences the behavior of other individuals
    • Learned vs inherited behavior
    • Paradigm of sociobiology
    • Social behavior evolves,   but only in terms of its inherited components.
    • Rersearch methods:   Diff. in rearing;    Diff. genetic strains;    Adoption studies;    Twin studies
    • Instincts:   behavioral components genetically programmed from birth
                  mating behavior     territorial behavior


  • Social organization is adaptive
    • Advantages vs disadvantages of social groups:
      • Predation;     infectious diseases
      • Finding food;     finding a mate
    • Simple forms of social organization:       flocks     vs   heirarchies (w/ dominance)
    • Altruism: an evolutionary puzzle:       behavior that benefits others, but at a fitness cost to the performer
      • Group selection;   kin selection;   reciprocal altruism (TIT for TAT);   PAVLOV
    • Eusociality and its evolution:       overlapping generations;   cooperative blood care
    • The Dawkins-Wilson debate


  • Reproductive strategies can alter fitness
    • Asexual vs sexual reproduction
    • Differences between the sexes (isogamy; anisogamy)
      • Parental investment
    • Mating systems:   monogamy;   promiscuity;   polygyny;   polyandry


  • Primate sociobiology: added complexities
    • Primate social behavior amd its development
      • Great need for maternal care--     Harlow's experiments
      • Rough-and-tumble play
      • Grooming
    • Reproductive strategies among primates
    • Some examples of human behaviors:
      • aggression;  
      • alcoholism: Type I (late onset, both sexes, more treatable);
          Type II (ealy onset, male, aggressive/criminal, less treatable, possibly more genetic per adoption studies)
      • homosexuality (possibly a small genetic component, but adoption studies are difficult)
      • gender dysphoria, transgenderism: inadequate study