triver's parental investment hypothesis
sex that invests more effort& more resources in offspring is the limiting resource for the reproduction of the less investing sex-object of competition
more than 1 observer collects data at same time
inventory of behaviors of a species with the behaviors organized into categories
focal animal sampling
occurrences of actions of 1 individual are recorded during a predetermined sample period
one that forages in way that maximizes its net energy gain
newly invented behaviors
ratchet effect hypothesis
cumulative cultural change, beneficial modifications to existing habits can accumulate over time
copy motor patterns without adopting or understanding goal/intention
adopt goal/intention without copying precise motor pattern
adopt goal/intention and copy precise motor pattern
life history approach
model of how individuals allocate resources (energy&effort) over lifetimes to maximize reproductive success
hormones from adrenal glands that helps shape the brain
deterioration of body function as we grow older
genes that are beneficial early in life can have adverse affect later in life
menopause evolved to switch women from investing in offspring production to investing in their grandchildren
study of reproductive functioning as an interaction b/w an organism and it's environment
capacity to bear offspring
monthly probability of conception
successful reproduction b/c you had children
secrete substances into ducts that empty into body cavities or onto surfaces
secrete products called hormones that enter bloodstream then are carried to other regions of the body to exert their effects
55-85% menstrual cycles during first 2 years are anovulatory
net difference b/w energy intake and energy expenditure
science of human growth and development
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