IQ had a high heritability in twin studies
A) however, environmental effects were negligible.
B) however, we cannot assume differences among human population are genetic.
C) therefore, differences among human populations must be genetic.
D) therefore, intelligence is highly dependent on genotype.
E) therefore, environment has little affect on intelligence.

Question

Quizplus · Accepted Answer

Just because IQ has a high heritability in twin studies, it does not mean that differences among human populations are solely genetic. Environmental factors can still play a significant role in shaping intelligence.

IQ Had a High Heritability in Twin Studies