Michigan State University Twin Registry

The MSUTR has a lifespan perspective focused on understanding risk factors for internalizing and externalizing disorders.

The primary purpose of the study was to investigate genetic, environmental (e.g., teasing by peers, parent-adolescent relationships), and neurobiological (i.e., gonadal hormones) risk factors for disordered eating, antisocial behavior, mood, attention/hyperactivity problems, and temperament during early adolescence.

The primary purpose of this study was to examine the extent to which genetic and environmental influences on eating pathology, ADHD, depressive symptoms, anxiety, personality characteristics, and substance use differ between men and women in young adulthood.

This study aims to investigate associations between ovarian hormone levels and several psychological characteristics, including mood, personality, disordered eating, pubertal development, impulsivity and risk taking behaviors.

This study aims to examine the ways in which genes and risk experiences (e.g., peer pressure) interact in the development of acting-out behaviors, depressed mood, anxiety, and other problems in childhood.