Abstract
We used a fourfold substance abuse typology consisting of non-abusers, alcohol abusers, cocaine abusers, and joint alcohol and cocaine abusers with a nationally representative sample of young adults (aged 19–26 years) to investigate issues related to prevalence, antecedents, and correlates of substance abuse. The prevalence data indicate higher alcohol abuse among white males, but approximately equal proportions of cocaine abuse and joint alcohol and cocaine abuse across gender and ethnic/racial groups. A simplex-like ordering was found for the four abuse groups with regard to the degree of problem severity associated with most of the antecedents and correlates. Joint alcohol and cocaine abusers demonstrated the highest levels of previous thirty-day and lifetime drug use, high levels of delinquent activity, and the highest rates of unemployment and marital instability. Cocaine abusers demonstrated the second highest levels of problem severity, alcohol abusers the third highest levels, and non-abusers the lowest levels. An exception to the simplex-like pattern was found with respect to educational attainment and verbal intelligence. Joint alcohol and cocaine abusers reported the lowest high school dropout rate and scored the highest on a measure of verbal intelligence. We suggest that joint alcohol and cocaine abusers may be characterized as “non-strivers” or “underachievers,” quite possibly as a consequence of substance abuse.
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