 As noted in several studies conducted throughout the 1960s and 1970s, there is a traditional north–south discrepancy in the distribution of homicide in the US, regardless of race, and this, it was argued, indicates that lower-class Southern Blacks and Whites share the same subculture of violence.The empirical basis for the subculture of violence theory, however, has been described as "extremely limited and unpersuasive".Very little has been done to attempt an adequate assessment of supposedly criminogenic subcultural values, and several studies conducted in the late 1970s claimed to falsify the assumptions upon which the subculture of violence theory depends.