Another interesting post.
I think you might also be interested into the EQ subject. The Emotional Quotient. While IQ is a measure of logical and memory abilities EQ measures the emotional intelligence of an individual.
It includes things like empathy, social awareness, capacity to listen, interact within a group, etc.

EQ is nowadays recognized as a very important characteristic which influences greatly one's chance of having a successful career and happiness in life.

Also the big difference with IQ is that one can work throughout their life at improving their EQ. It's less static than their IQ.