(a construct related to impulsivity), drug dependence, conduct disorder, and antisocial behavior appear to be well represented by an “externalizing” factor (i.e., latent variable), providing evidence that both personality and substance use should be viewed along the same externalizing continuum (see Krueger et al., 2002; Krueger, Markon, Patrick, & Iacono, 2005). Rather than indicating deficient socialization processes per se, these models suggest that the overlap between alcohol dependence, constraint, and other externalizing behaviors is due largely to genetic factors (see Genetic Diathesis section below) and, to a lesser extent, environmental influences (Krueger et al., 2002).
