Using the Multiple-Choice Procedure to Measure the Relative Reinforcing Efficacy of Gambling: Initial Validity Evidence Among College Students.

The multiple choice procedure (MCP) is used to assess the relative reinforcing value of concurrently available stimuli. The MCP was originally developed to assess the reinforcing value of drugs; the current within-subjects study employed the MCP to assess the reinforcing value of gambling behavior. Participants (N = 323) completed six versions of the MCP that presented hypothetical choices between money to be used while gambling ($10 or $25) versus escalating amounts of guaranteed money available immediately or after delays of either 1 week or 1 month. Results suggest that choices on the MCP are correlated with other measures of gambling behavior, thus providing concurrent validity data for using the MCP to quantify the relative reinforcing value of gambling. The MCP for gambling also displayed sensitivity to reinforcer magnitude and delay effects, which provides evidence of criterion validity. The results are consistent with a behavioral economic model of addiction and suggest that the MCP could be a valid tool for future research on gambling behavior.

Student perceptions of specific components within a personalized feedback intervention.

Previous research suggests that personalized feedback interventions (PFI) can be an effective tool in reducing risky alcohol use among college students; however, little is known about how students perceive the individual components that are typically used during PFIs. In the current study, participants (N = 219, 63.5% female, 84% Caucasian, undergraduates enrolled in introductory psychology courses) reported their drinking behavior in the past month, and then immediately received a computerized PFI based on their self-reported alcohol use. The PFI was modeled from the Brief Alcohol Screening and Intervention for College Students (BASICS) approach and included 10 separate feedback components presented in random order. Participants provided acceptability ratings on each of the 10 components. Overall, participants found the PFI generally acceptable, with females rating the PFI as more acceptable than males, and binge drinkers (defined as 5 or more drinks on an occasion for males and 4 or more drinks for females) rating the PFI more acceptable than nonbinge drinkers. Differences in acceptability emerged across the 10 components, as participants rated the practical cost components (e.g., money spent on alcohol, calories consumed) as more acceptable than didactic information (e.g., impact of blood alcohol levels) and personal negative consequences. The results are similar to a previous study that examines student reactions to PFIs (Miller & Leffingwell, 2013). Overall, the findings suggest that college students prefer certain feedback components to others. Moreover, the findings indicate that future research is needed to examine the relationship between preferred components and treatment outcomes to determine which components are most effective for reducing risky drinking.

Brief alcohol intervention with college student drinkers: face-to-face versus computerized feedback.

Research has demonstrated that brief interventions featuring personalized feedback can be used to decrease alcohol use among heavy-drinking college students. The current study investigated the efficacy of face-to-face and computer delivered interventions relative to an assessment-only control condition. The content of the personalized feedback was identical across the face-to-face and computerized conditions. There were 84 at-risk students assessed before, and 4 weeks after, the delivery of the interventions. The results suggest that both face-to-face and computerized interventions were equally successful in reducing the quantity and frequency of alcohol consumption, and that both interventions were more effective than the control condition. Participants also rated both interventions as acceptable, although the face-to-face intervention was given a more favorable rating. These initial results suggest that computerized interventions can be used to efficiently reduce alcohol use among college students. (PsycINFO Database Record (c) 2009 APA, all rights reserved).