The #IQ criss cross curve with approximate IQ measurements of concentration and a simple brain model. The upper curve is for tea coffee cigar and speed up drug addiction while lower curve is for alcohol and other slower drugs. I developed a formula to find blood concentration analytically. Paper on website. 

I developed several formulae for medicene sports relations as a marketing tactic for cube chess cricket etc. Burried somewhere.

IQ is a great field. Intelligence depends on games and financial activities.