“…Familial clustering of these traits may offer several lines of evidence predisposing genetic and environmental factors, including: (a) high rates of character disorder in the first degree relatives of alcoholics (Amark, 1951; Bleular, 1955), (b) a higher incidence of familial alcoholism in military men with antisocial behaviour and more severe alcoholism (Frances et al, 1980), (c) a higher incidence of aggressiveness in the fathers of criminal alcoholics (McCord, 1981), (d) a younger age of onset and greater legal problems in familial alcoholism, particularly if both parents were alcoholics (McKenna and Pickens, 1981;Schuckit, 1984), (e) a family history of alcoholism, in males, was associated with earlier onset, greater severity, and antisocial behaviour in a large sample of hospitalised alcoholics (Latcham, 1985), (f) an A/B typology (Babor et al, 1992), with type B resembling strongly the Type II alcohol of Cloninger (cf., Cloninger et al, 1981;Cloninger, 1987;Schuckit and Irwin, 1989), as well as the further clustering evidence reinforcing personalitysubstance abuse interactions (Litt et al, 1992). For example, in families with a substance-abusing father, there was a significant correlation between parental disruptive behaviour (whether as child or adult) and similar behaviour in 10-12 year-old sons (Majumder et al, 1998).…”