The Healthy Adjustment of Adopted Adolescents by Kathleen L. Whitten, Ph.D. This study looked at 17,000 American families, including 535 adoptive families, to study how adopted teens adjust as they age. Each family had an adolescent between 12 and 18 years old. Overall, adoptive families had more positive relationships than the non-adoptive families and researchers found no differences between adopted and non-adopted teens on 12 outcomes: delinquency, depression/anxiety, psychosomatic illness, amount of activities with male friends, amount of activities with female friends, self-efficacy, grade-point average, ever repeated a grade, ever been suspended from school, ever been expelled from school, ever had sex, and ever attempted suicide. This contrasts to other studies, especially older ones, that which emphasize negative behavior among adopted children.