Examining Research Evidence on Spatial Performance from One Stone Age

Examining research evidence on spatial performance from one Stone Age culture, one culture from the Middle East, and another from northern Europe, results showed that

A) the performance of men and women varied from the results of studies done on participants from the United States.
B) boys and men outperformed girls and women in all cultures, but the gender difference was not as large as the gender difference found in the United States.
C) girls and women only show a performance deficit in the United States.
D) the pattern of gender differences that appear in the United States is common to other industrialized (but not to unindustrialized) cultures.