Expectancy in Mediational Models of Cocaine Use

Document Type



Community and Global Health (CGU)

Publication Date



Medicine and Health Sciences | Mental and Social Health | Psychology | Social and Behavioral Sciences | Substance Abuse and Addiction


Several theoretical explanations of how expectancies may influence cocaine use were studied. Hypotheses from these approaches use trait (sensation seeking and social conformity), cognitive (expectancy), and state-like (depression and loneliness) constructs to explain cocaine use and its problem consequences. Constructs from these different approaches were compared as predictors of cocaine use among a community sample of adults. Results revealed that general and specific components of an expectancy construct predicted cocaine use independently from all other constructs. In addition, a mediational model suggested that expectancies may mediate the effects of certain personality constructs on cocaine use and abuse. These findings contrast and integrate cognitive approaches to the explanation of drug use and other behaviors with trait and state approaches to personality.

Rights Information

© 1995 Elsevier Ltd.