 The present proposal is designed to meet the objectives of the ExploratoryDevelopmental Grants program R21 for studies that will contribute to the development of future, more intensive and larger research programs. The objectives of the proposed research are to: 1 explore the feasibility of adapting a brief intervention from our previous work in schools and emergency rooms for use in the primary care setting, and 2 assess the short-term efficacy of the intervention in the primary care setting. This project serves as our first step in an innovative line of research designed to examine the viability of utilizing brief interventions targeting adolescent drug use in primary care settings. Our objectives will be accomplished through the following aims: 