Chapter 7- Intelligence Experience Flashcards
what is the heritability of cognition
executive function is highly heritable
cognition similarity in twins
higher in MZ than DZ
is genetic influence direct or indirect
indirect
hertiability of intelligence in a passive effect
parent’s genes dictate how they behave towards children and the environment they provide
hertiability of intelligence in an evocative and active effect
child’s genes dictate how others respond to them and which environments they choose
effect of SES on IQ
higher SES associated with children with higher IQ
- may just have to do with environmental resources and friend selection, neighbourhood, schools
how do adoption studies help understand intelligence
no genetic relationship between parents and children- reveals impact of environment
is it genetics or environment
both
- prenatal environment more influential than previously believed
paradoxical adoption study
average IQ of african american kids adopted into middle class white family is higher than non adopted
- however there is stronger correlation with the IQ scores of the biological mothers
correlations
reveal relationship between two variables but no absolute score
rat study on environment and cognitive outcome
- those free the whole time had best outcomes
- those in bad conditions then freed had worst conditions
shows importance of early environment
romanian orphanages story
gov’t banned abortion and BC
- many kids put underfunded in orphanages
- kids in deprived enviros had declined physical, cognitive and brain effects
plasticity in institutionalization
effects can be reversed if removed early enough
neural correlates of intelligence
recent research suggests that efficiency of processing is more indicative of intelligence
change in cortical thickness findings
- no difference between low and high performative IQ
- differences in low and high verbal IQ individuals
