The Buraku People of Japan, Who Are Looked Down Upon

Multiple Choice

The Buraku people of Japan, who are looked down upon by other Japanese and whose IQ scores are 10 to 15 points below mainstream Japanese, illustrate the fact that:

A) IQ scores are genetically determined.
B) IQ is fixed at birth and unlikely to change.
C) Social discrimination can affect IQ scores.
D) Environmental factors have no effect on IQ scores.