----- Original Message ----- 
From: "Geoffrey Purcell"
Generally speaking, intelligence can be (roughly) measured by comparing the
size of the brain to the body, and forming the appropriate ratio.

We don't even have a developed frontal cortex until we're in our early 20's, 
no matter what size we happen to be and I read a while back of a boy/youth 
who was of normal size with a substantial IQ and upon examination he had NO 
brain.  Nothing is carved in stone.  Many factors are involved in our brain 
development and evolution.  But then I digress.....  Oliva