Social anhedonia, a tendency toward experiencing social stimuli as less positive or pleasurable, is associated with maladaptive personality traits, poor interpersonal functioning, and psychopathology, and is typically elevated in males compared with females. However, the correlates of social anhedonia in youth have not been well defined. In this…

This research examined whether following social and physical aggression trajectories across Grades 3-12 predicted psychological maladjustment. Teachers rated participants' (n = 287, 138 boys) aggressive behavior at the end of each school year. Following the 12th grade, psychosocial outcomes were measured: rule-breaking behaviors, internalizing…

Background: This study aimed to identify personality features characterizing adolescent girls and boys with borderline personality disorder (BPD) and to see whether meaningful patterns of heterogeneity exist among adolescents diagnosed with the disorder. Methods: Two hundred and ninety-four randomly selected doctoral-level clinicians described…