3q29 deletion syndrome (3q29del) is associated with a significantly increased risk for neurodevelopmental and neuropsychiatric disorders. However, the full spectrum of behavioral phenotypes associated with 3q29del is still evolving. Individuals with 3q29del (n = 96, 60.42% male) or their guardian completed the Achenbach Child or Adult Behavior…

Introduction: Compared to their neurotypical peers, children and adolescents with neurodevelopmental disorders (NDs) experience worse mental health outcomes, including greater service use and functional impairment. Few studies, however, have examined the neurodevelopmental contributions to mental health complexity among those seeking…