What appears to be the most responsible for ethnic differences in IQ

Question

Quizplus · Accepted Answer

Research has consistently shown that cultural disadvantages associated with a lower-class upbringing, such as poor nutrition and inadequate education, play a significant role in ethnic differences in IQ scores. While other factors, such as test bias and poor rapport with test givers, may also contribute, they are not as consistently supported by empirical evidence as cultural disadvantages. The idea of genetic differences between ethnic groups has been largely disproven as an explanation for differences in IQ scores.

What Appears to Be the Most Responsible for Ethnic Differences