Preface, Irving E. SigelSibling, Parents, and Peers: A Longitudinal Study of Social Influences in Adolescent Risk for Alcohol Use and Abuse, Rand D. Conger and Martha A. RueterBrothers and Sisters in Middle Childhood and Early Adolescence: Continuity and Change in Individual Differences, Judy DunnSibling Relationships in Middle and Old Age, Victor G. CicirelliSiblings, Behavioral Genetics, and Competence, Robert Plomin, Beth Manke, and Alison PikeAdult Sibling Relationships: Racial and Ethnic Comparisons, Agnes Riedmann and Lynn WhitePersonality and Sibling Relationships, Wyndol Furman and Richard P. LanthierDelinquency and IQ: Using Siblings to Find Sources of Variation, David C. Rowe, Miriam R. Linver, and Joseph L. RodgersThe Family Contexts of Children's Sibling Relationships, Susan M. McHale and Ann C. CrouterNegative Sibling Interaction Patterns as Predictors of Later Adjustment Problems in Adolescent and Young Adult Males, Lew Bank, G.R. Patterson, and J.B. ReidA Risk-Amelioration Model of Sibling Relationships: Conceptual Underpinnings and Preliminary Findings, Gene H. Brody and Zolinda StonemanAuthor IndexSubject Index