This study provides useful data on motivation that could be used to improve smoking prevention interventions among adolescents. The most important factors seem to be peer influence, parental attitudes, easy access to tobacco and symptoms of dependence.

The intervention on alcohol consumption of adolescents should incorporate their motivation to achieve greater efficiency.

No abstract

Despite the decrease in the prevalence of alcohol drinking, the increase in the percentage of the hazardous drinking is a public health problem. It is related to being female, binge-drinking, and multiple drug use. Nightlife and social standards are the main reasons given by adolescents, who have no perception of risk.