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Intelligence
Objective 3 Heritability and the problems with heritability studies
4
Psychology
Undergraduate 1
09/23/2017

Additional Psychology Flashcards

 


 

Cards

Term
Environment and Genetic influences
Definition
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Term
Intelligence and heredity
Definition
- Probably fair to say that few individuals today would argue that IQ is entirely determined by genetic makeup.
- Just as with evidence for heredity, there is considerable evidence for environmental influences
- Similar as children, and when they reach adulthood they tend to become more different. In childhood they had very similar environments, but in adulthood there is a great difference in environment
- An adopted child as a chid has a very similar IQ to their siblings, but as they grow up they begin to have an IQ similar to their actual biological parent
Term
Intelligence and environment
Definition
o Correlation between IQ of non-identical twins higher than that between siblings
o Evidence that enrichment of environment is associated with increase in IQ
o IQ scores worldwide appear to be increasing (“Flynn effect”), while genotype remains essentially the same. People are performing higher on IQ testing
Term
Genetic and environmental interaction
Definition
- Notion of “heritability”, that percentage of population variability that can be accounted for by differences in people’s genetics – estimates for IQ generally between about 0.4 and 0.7
- Very important to remember that heritability refers to populations, not individuals – it doesn’t mean that your IQ is between 40% and 70% genetically determined!
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