Some of the most intriguing issues in the study of cognitive, social, emotional, and physical development arise in the debate over nature versus nurture; a debate difficult to resolve because it is difficult to separate the respective contributions of genes and environment to development.

The most powerful approach to this separation is through longitudinal adoption studies. The Colorado Adoption Project (CAP) is the only longitudinal adoption study in existence examining development continuously from birth to adolescence, which makes it a unique, powerful, and tremendously valuable resource. CAP is an ongoing assessment of 245 adopted children and 245 biological control children assessed from birth to early adolescence.

This book is the fourth in a series describing CAP results. This latest volume, edited by four eminent researchers in developmental psychology, builds on the large body of research already generated by investigating the role of genes and environments on early adolescent development.

Leading researchers examine how behavior genetics provides crucial insights into genetic and environmental influences in the development of biobehavioral disorders. These influences are illustrated by using the examples of cardiovascular disease, obesity and eating disorders, alcohol use and abuse, and smoking behavior. Contributors discuss the relevance of molecular genetic approaches and twin and family designs to the complex field of behavior medicine research.

Behavioral genetics is a fast-growing, multidisciplinary field which attempts to explain the influence of genetic and environmental factors on behavior through the lifespan. The preferred investigative technique for teasing out the differences between genetics and the environment is the longitudinal twin study. This book is the first complete publication from the MacArthur Longitudinal Twin Study (MALTS) that is by far the most ambitious and comprehensive logitudinal twin study to date. The goal of such an in-depth study was merely not to provide thorough descriptions of developmental change between the ages of one and three years, but to offer an original theoretical framework that explains how change occurs in different domains and how genetics and the environment influence those changes. In fact, this rigorous study will set the agenda for developmental psychology and behavioral genetics for decades to come.

Leading researchers examine how behavior genetics provides crucial insights into genetic and environmental influences in the development of biobehavioral disorders. These influences are illustrated by using the examples of cardiovascular disease, obesity and eating disorders, alcohol use and abuse, and smoking behavior. Contributors discuss the relevance of molecular genetic approaches and twin and family designs to the complex field of behavior medicine research.