Early theorizing on delinquency and deviancy, starting in the 1930s, produced a voluminous body of theoretical perspectives. These perspectives were attempts to explain the etiology of delinquency and deviancy in terms of such factors as personality, family and genetic predispositional factors, and sociological conditions. They had in common the aim to propose a superordinate theory: an accounting of the spectrum of delinquent behavior by reference to a unitary underlying cause. Social learning theorists, making their contribution to the explanation of delinquency within the last 20 years, have proposed a somewhat different position, namely that delinquent and deviant behavior is multiply determined, a view that has now been widely accepted (Feldman, 1977; Hirschi & Selvin, 1967; Johnson, 1979).