Introduction
Introduction
Genetic Influences on Life Events in Childhood
Using MZ Differences in the Search for Nonshared Environmental Effects
Genetic and Environmental Influences on the Covariation Between Hyperactivity and Conduct Disturbance in Juvenile Twins
B Lymphocyte Antigen D8/17: A Peripheral Marker for Childhood-onset Obsessive-Compulsive Disorder and Tourette's Syndrome?
Autism or Atypical Autism in Maternally but Not Paternally Derived Proximal 15q Duplication
X Chromosome and Infantile Autism