A finding that siblings reared together are more similar in intelligence than half-siblings (individuals who share one parent) reared together would be evidence for the:

Question

Quizplus · Accepted Answer

If siblings reared together are more similar in intelligence than half-siblings, it suggests that genetic factors (which are shared by full siblings but not by half-siblings) play a crucial role in determining intelligence. This finding does not necessarily indicate an absence of environmental factors, but it does suggest that shared genetics are a stronger influence.

A Finding That Siblings Reared Together Are More Similar in Intelligence