Males' mental ability scores show greater ________ than females' mental ability scores.

A) stability
B) heritability
C) variability
D) growth mindset

Research has consistently shown that males' mental ability scores have a greater variability than females' scores. This means that there are more males who score very high or very low on mental ability tests compared to females, who tend to cluster around the average. However, this does not necessarily mean that males are smarter than females overall.