“…Shields (1968) postulated "some specific vulnerability, genetic or constitutional," which predisposes the individual toward homosexuality. Such a factor is unlikely to be as specific as a gene, and may be as general as a restricted range of physical characteristics or behavioral qualities which influence the personality (Kinsey, Pomeroy, & Martin, 1948), Spencer (1959) acknowledged a bias against a constitutional basis, but nevertheless concluded that a "weak physique" appeared to be an important determinant of homosexual behavior. The poor muscle development itself, however, may be a function of feminine interests and limited physical activity.…”