Participants completed a 100-item version of the ESI, a self-report measure that was developed to assess a broad range of behavioral and personality characteristics associated with externalizing psychopathology (Krueger et al., 2007). The 100-item version (ESI-100) used here was the same as that used by Hall et al. (2007); scores on the ESI-100 correlate very highly (r = .98) with scores from the full 415-item ESI. As evidence of the construct validity of the ESI-100 in the current sample, Table 1 presents correlations between ESI-100 scores and scores on other self-report measures with conceptual or empirical links to externalizing psychopathology, namely: the Alcohol Dependence Scale (H. A. Skinner & Allen, 1982); the Short Drug Abuse Screening Test (A. Skinner, 1982); the Socialization scale (Gough, 1960); the Behavior Report on Rule Breaking, a measure of adolescent and adult antisocial behaviors composed of items from several other published measures (Clark & Tifft, 1966; Hindelang, Hirschi, & Weis, 1981; Nye & Short, 1957); and broad factors of the Multidimensional Personality Questionnaire-Brief Form (MPQ-BF; Patrick, Curtin, & Tellegen, 2002).
