“One study shows that boys’ clubs and similar programs aimed at the prevention of crime and the rehabilitation of the juvenile delinquent tend to attract the good boys, while the bad boys stay away.” This quotation implies most directly that the number of instances in which juvenile delinquents are rehabilitated through such programs as boys’ clubs is

Most Police Officer exams test candidates for the following skills:
Deductive Reasoning
Inductive Reasoning
Spatial Orientation
Memorization
Visualization
Reading Comprehension
Verbal Expression
Mathematical Reasoning
Problem Solving
Written Expression