A worldwide survey of intelligence test scores showed that there were significant gains in average IQ scores in 14 nations in just one generation. These results provide support for:
A) the effect of racial characteristics on IQ scores.
B) environmental influences on IQ scores.
C) genetic influences on IQ scores.
D) the effect of diet on IQ scores.

Question

Quizplus · Accepted Answer

The significant gains in average IQ scores in just one generation suggest that these changes are not solely based on genetics or racial characteristics, but rather on environmental influences such as improvements in education, nutrition, and healthcare. This supports the idea that environmental factors can have a significant impact on IQ scores.

A Worldwide Survey of Intelligence Test Scores Showed That There