Who would do such a thing? Cops.
Who would do such a thing? Cops.
Because pretty much everything I can find on it has the whiff of urban legend, which folk like you repeat because it feed into their worldview.
http://en.wikipedia.org/wiki/Intelligence_quotient
If there are factual inaccuracies there, please point them out. However just going by the "whiff" of something seems like you're opening yourself up to rejecting parts of reality that do not fit your worldview.
Edit: better source: http://www.aele.org/apa/jordan-newlondon.html and here is an interview of the man by CNN: http://www.postroad.com/news/2000/20000912-new-london-police...
"No IQs above 125" is not the same as "No IQs above 90".
On the other hand, of course, if your house has been burglarized, you want just his guy on your side, ignoring the lame folks babbling inanities and looking for the one that won't meet his eyes, has a cut from broken glass on his hand, or too much cash in his pocket. Never mind socioeconomic theories. And when he finds him, he brings him in, even if it takes the truncheon.
Everybody thinks they know who should be running things. Scholars think scholars would do well. Merchants think they should rule. Soldiers want to rule all the time. Most of the time they're wrong.
It takes a certain mindset to survive any job. Assembly-line, sales, engineering. Even police work. You have to be pretty thick-skinned for that. More important, you have to go where angels fear to tread, confront argumentative people pretty much all the time, and be willing to be yelled at afterward because you gotta do what you gotta do, out on the street.