I call it the "count the ravioli" mentality.

I have a good friend of many years who grew up with two brothers, all close in age. When their mom made ravioli for lunch, they were so concerned that one might get more ravioli than another, so that she had to count out the ravioli to ensure each got the same amount. Extras were either divided or discarded. They weren't concerned with whether they had enough, just that no one got more.

This mentality is seriously detrimental to society.