PSYC 208 Study Guide - Life History Theory, Menopause, Menarche
Document Summary
Paternal uncertainty: not sure that it"s their offspring. Women don"t need to overinvest in men because they do not gain more offspring from mating with more men. Greater encephalization longer the life-span & longer the individual portions of the life- span. Infancy: early development after birth: juvenile periods: rapid development, but not as rapid as infancy, adulthood, post-reproduction. Why such along post-reproductive period: when you stop being reproductive, you have to live long enough to raise your last offspring, even if it"s at 50. Fertility: likelihood that copulation will lead to a viable pregnancy (peaks at 25) Produce offspring, don"t invest in them, so most of them die. K = carrying capacity for a habitat with resources limitations: environment usually at carrying capacity, k-strategist produces quality offspring, vertebrates (relative to insects) Life-history differences r-strategist: many offspring, ow parental investment, high infant mortality, short life-span, rapid development to reproductive state, early reproduction, small body size, variable population size.
