Originally Posted by Zen Scanner
Alternatively, I know the word on the street when I was a kid was to never tell a child their IQ as it could damage them for life.

My parents told me my IQ and defined it as mental age divided by chronological age. Once I had a discussion with a guidance counselor where he told me that students who are X years old are not allowed to do Y. I replied that my mental age was X', based on my IQ. He was taken aback and not persuaded. I am still glad my parents told me my IQ.