In Their Longitudinal Study of Externalizing Behaviors, Hill and Colleagues

In their longitudinal study of externalizing behaviors, Hill and colleagues (2006) examined behaviors across the preschool period at 2, 4, and 5 years of age. Which of the following was not one of the study outcomes?

A) 11% of boys showed externalizing behaviors that remained stable across the preschool period.
B) 11% of girls showed externalizing behaviors that remained stable across the preschool period.
C) Low SES was a predictor for externalizing behaviors in boys.
D) Low scores for emotion regulation at 2 years placed girls at greater risk.