What is intelligence: ability to learn or understand or to deal with new or trying situations. Cognition split cognition into verbal ability, visual reasoning, and processing abilities processing --> memory, and speed. Disharmonious --> piaget"s main goal was to have our goals and thought processes be harmonious with our environment. Rigid and in exible --> some are extra resistant to change than others not able to assimilate and accommodate in that stage of development in terms of motivation less exposure to changing environment, slower rates of cognitive growth. Overview*of*piaget"s*stages)of)cognitive) development: sensorimotor (birth*to*2*years, preoperational (2*to*7*years, concrete9operational (7*to*11*years, formal9operational (11/12*years*and*beyond) Sensorimotor*stage rely on behavioural schemas to learn about environment. Six*substages: reflex)activity, primary)circular)reactions, secondary)circular)reactions, coordination)of)secondary)schemes, tertiary)circular)reactions, mental)representations sounds and movements from their own body realize things can happen outside of their own bodies holding mental images in your mind primates using tools. Development*of*object)permanence: things*still*exist*even*if*hidden*from*view, a9not9b)error not object permanence --> look for it in the last place they found it.