Research Shows That Aptitude Scores Are Better Predictors of Achievement

Research shows that aptitude scores are better predictors of achievement in the lower grades than in college.This finding can best be interpreted to mean that

A) college students are not as predictable as elementary school pupils.
B) aptitude tests should not be used with college students.
C) there is less variability in aptitude and achievement among elementary school students than among college students.
D) there is greater variability in aptitude and achievement among elementary school students than among college students.
E) college teachers tend to be more objective in grading than elementary school teachers.