Considered the grandfather of sport psychology in north america, this former university of illinois professor wrote two books, psychology of coaching (1926) and psychology of athletes (1928):

answer; coleman griffith;

well since twins have about the same dna they dont have one think in common which is the figer print. nobodys fingerprint is the same. if your using twin you would most likely get around the same results for both of them because of the genetics.. i hope this