The Role of Positive and Negative Affect in Illicit Substance Use and Alcohol Use: An Ecological Momentary Assessment Study

Theories suggest that experiences of negative and positive affect are important precursors to alcohol and illicit substance use. Research using ecological momentary assessments (EMAs) has generally supported the relation between momentary experiences of positive affect, but not negative affect, and subsequent substance use. Unfortunately, most of these studies have focused on alcohol use and not other substance use. The goal of this study was to further explore the relation between momentary affect and the use of both alcohol and illicit substances within a population of individuals with a history of substance use. In addition, this study aimed to understand whether the relations between affect and substance use would vary depending on the timing of EMAs of affect before substance use.