PART ONE: ETHNICITY AND ETHNIC IDENTITY Toward an Understanding of Ethnicity and Ethnic Identity, and Their Relationship with Drug Use Research - Joseph E Trimble Issues of Ethnicity in Research on the Prevention of Substance Abuse - R Lorraine Collins Conducting Research in Ethnic Minority Communities - Robert E Fullilove and Mindy Thompson Fullilove Considerations and Challenges PART TWO: DRUG USE PREVALENCE, ETHNIC DIFFERENCES, AND ETIOLOGY Racial/Ethnic Differences in Adolescent Drug Use - John M Wallace et al Exploring Possible Explanations Ethnic Differences in Drug Use - Denise B Kandel Patterns and Paradoxes Drug Use Etiology among Ethnic Minority Adolescents - Michael D Newcomb Risk and Protective Factors Causal Models of Substance Abuse among Puerto Rican Adolescents - Orlando Rodriguez Implications for Prevention Cultural Identity and Drug Use among Latino and Latina Adolescents - Maria Felix-Ortiz and Michael D Newcomb PART THREE: PROMISING APPROACHES TO DRUG ABUSE PREVENTION Drug Abuse Prevention in School Settings - Gilbert J Botvin Prevention Research in Multiethnic Communities - Mary Ann Pentz Developing Community Support and Collaboration, and Adapting Research Methods Prevention in Community Settings - Steven Schinke and Kristin Cole Developing Interventions for Multiethnic Populations - Linda Dusenbury and Tracy Diaz A Case Study with Homeless Youth Strengthening Families to Prevent Drug Use in Multiethnic Youth - Karol L Kumpfer and Rose Alvarado Substance Abuse Prevention Involving Asian/Pacific Islander American Communities - Sehwan Kim et al