PSYC18H3 Chapter Notes - Chapter 2: Neocortex, Homo Erectus, Simian
Document Summary
Darwin used a theory fo emotional expression to dethrone humans as unique creations in the. Super abundance = when animals and plants produce more offspring than necessary merely to reproduce themselves. Variation = each offspring are somewhat different from others and these traits are passed on by heredity. Features of the physical and social environment in which humans evolved that determined whether or not people survived and reproduced. Fight and flight, preference for food taste etc) are developed in response to selection pressures. Sexual selection pressures = intrasexual competition and intersexual competition. Social selection pressures may account for evolution of moral emotions like gratitude, Intra = within a sex for access to mates. Inter = when one sex selects for specific traits in the other sex for a mate anger, compassion. Genetically based traits that allow organism to respond well to selection pressures, survive, and reproduce. Preference of symmetry because it = good health.
