“…A controversial but historically frequently proposed explanation for their overrepresentation is that Blacks as a group are more prone genetically to mental disability than are Whites (Fischer, 1969;Pettigrew, 1964;Prudhomme & Musto, 1973;Thomas & Sillen, 1972;Warheit, Holzer, & Arey, 1975;Wilkinson & Spurlock, 1986). In contrast, other commentators also propose that Blacks are more vulnerable to mental disability but because of their predominately low socioeconomic position and the deprivation and stresses associated with poverty and inner-city life rather than because of genetics (e.g., Dohrenwend & Dohrenwend, 1974;Dressier & Badger, 1985;Dunham, 1980;Lawson, 1986;Moynihan, 1965;Thomas & Sillen, 1972;D.…”