Few studies have examined the impact of alcohol on metacognition for witnessed events. We used a 2 × 2 balanced placebo design, where mock witnesses expected and drank alcohol, did not expect but drank alcohol, did not expect nor drank alcohol, or expected but did not drink alcohol. Participants watched a mock crime in a bar-lab, followed by free…

The current study analyzes a sample of questions about drugs asked online by youth who participated in the National Institute on Drug Abuse's (NIDA) "Drug Facts Chat Day." The types of drugs youth asked about were coded into 17 substance categories, and the topics they raised were coded into seven thematic categories. The top five…

One hundred fifty-three problem drinkers were randomly assigned to receive naltrexone 50 mg or placebo on a daily or targeted (to high-risk drinking situations) basis. Using structured nightly diaries, participants recorded negative and positive mood, desire to drink, and alcohol consumption over 8 weeks. Results indicated that individuals engaged…

Experimental research has firmly established the role of expectancies in determining the behavioral consequences of alcohol consumption. To ascertain whether these alcohol expectancies derive from direct pharmacological experience with alcohol or from nonpharmacological, social-learning factors, an adolescent expectancy questionnaire was…

The biological mechanisms of nicotine dependence are described, the prevalence of tobacco dependency among those using other mood-altering drugs is examined, and the most efficacious way to address this dependency is discussed. New data on the relationship of smoking addiction to other addictions are examined. Topics include: (1) "Tobacco…