I am of the opinion that groups develop a group personality based on various factors, one of which is the affect of dominant personalities within the group. That dominant personality may or may noy be the formal leader. Sometimes dumb asses come to rule the roost.

 A first reaction to this story is that in a group like a police force or an army rifle squad, for instance, which has or develops a tendency to handle potentially explosive situations with brute force, it would seem to be a wise policy to insert smarter people into that group every chance that came about. That assumes my belief that smarter people are less likely to encourage dumb ass attitudes and actions.They would be more likely to shift the group personality in a smarter direction. I seriously doubt that a very smart person instituted a policy of rejecting very smart people from the police force.

I find it hard to believe a police department would just give an IQ test. An aptitude test seems like it would be more appropriate. Of course, someone would have to define what aptitudes and their degrees have to be met just like IQ and that would probably generate even more lawsuits.

Still, seems like the best way to staff a large force. Not sure it would work as well in a small town where the talent pool is naturally very shallow.