To illuminate individual differences in the development of attention-deficit hyperactivity disorder (ADHD) symptoms in the general population, psychometric measures are needed that can capture general population-level symptom variation reliably, validly, and comparably from childhood through to the transition to adulthood. The ADHD subscale of the…

This study characterizes several aspects of emerging ethnic identity in childhood and its associations with interethnic group social preferences. Understanding these processes is important, as early interethnic group social practices may form a foundation for later interethnic group attitudes and behaviors in adolescence. Children of Cambodian,…