The fact that intelligence "runs in families" does NOT necessarily prove a genetic component to intelligence because:
A)research rarely conducts genotypes on the actual family members studied.
B)family members share a similar environment.
C)family members are not as genetically similar as believed in earlier times.
D)few studies have conducted intelligence research on identical twins.

Question

Quizplus · Accepted Answer

The fact that intelligence runs in families could be attributed to the fact that family members share a similar environment which could impact their cognitive development. Therefore, it does not necessarily prove a genetic component to intelligence.

The Fact That Intelligence "Runs in Families" Does NOT Necessarily