Conduct problems are disruptive or dysfunctional behaviors that reduce a person’s willingness or ability to follow established norms or a specific code of conduct. Young children and teenagers sometimes develop forms of these behaviors that are serious enough to qualify for an official mental health diagnosis. In a study published in November 2013 in the journal Drug and Alcohol Dependence, a team of British and American researchers looked at the potential impact of conduct problems on the frequency of alcohol consumption during adolescence. These researchers concluded that conduct problems have a strong influence on drinking levels in young teenagers.