I felt too stupid to be considered human until I was in my mid 40's because I was told every day of my childhood that I was stupid. Even many years of intense psychotherapy couldn't assuage that feeling and belief. It took becoming a professionally published author to change my self-image to one of being intelligent - my IQ is about 125. ----
PLEASE, PLEASE, DO NOT CALL YOUR CHILDREN STUPID OR TELL THEM THEY ARE STUPID FOR ANY REASON AT ANY TIME!