Emphasis on sensorimotor skills + less on cog processes such as lang, thinking + problem solving. Habituation: measure of info processing predicts later IQ more effectively than Bayley. Correlation bw habituation + IQ in childhood is approx. .5 Infants who habituate to visual stimuli more rapidly tend to have high IQ as children + adults Scores on Bayley scales used for important diagnostic tools During childhood + adolescence scores fluctuate bw 10 + 20 points What do IQ scores Predict?Intelligence tests reasonably valid measures of achievement in school. Also predict performancein workplace. Dynamic tests measure children's potential for future learning +
Both static + dynamic testing provide useful + independent information. If aim to predict future levels of child's skill, valuable to know child's current level of skill (static testing) as well as child's potential to acquire greater skill (dynamic testing) Hereditary + Environmental Factors Evidence for impact of enviro comes from findings on impact of some enviros, historical change + effects of intervention programs on IQ scores Heredity also influences development profiles for IQ scores Identical twins not only more alike in overall IQ but in development change of IQ as well At least half was due to genetic factors As adopted children get older test scores resemble bio parents, evidence for greater impact of heredity on IQ as child grows If Intelligence solely due to heredity, enviro should have little/no impact on children's intelligence Characteristics of parents bev + home enviro related to children's intelligence Plenty of appropriate play materials needed in home Impact of enviro on intelligence implicated by dramatic rise in IQ test scores during 20th century (Flynn effect) Rise must reflect impact of some aspect of enviro + change might reflect smaller, but better educated families w more leisure time Might be due to movies, tv, comp + internet providing children w increasable wealth if virtual experience Improvements in IQ scores particularly striking lower end of distribution Fewer children receiving very low IQ scores, show benefits of improved healthcare, nutrition + edu for children w limited access to resources in previous generations Wo preschool, children from low income families often enter kindergarten of grade 1 lacking key readiness skills for academic success, fall behind peers who have these skills Concluded children's intellectual developments could reach unprecedented heights once child
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- Fall '13
- Intelligence quotient, IQ scores, info processing, cog development