Interest: The use of cross-sectional and longitudinal studies
of twins and families to study behavioral development, and genetic and
environmental influences on behavior, personality, and health. Recent
research focus on the development of behavior problems in childhood
and adolescence, vulnerability to drug use, abuse, and dependence, genetics
and health, and linkage and association studies of behavioral traits.
Dr. Hewitt is Director of the Institute for Behavioral Genetics and
Executive Editor of the journal, Behavior