Developmental trajectories of tonic and phasic irritability from ages 12 to 21: early predictors, co-development, and psychiatric outcomes in young adulthood.
BACKGROUND Irritability is a common and impairing, transdiagnostic feature of youth psychopathology. Theory distinguishes tonic irritability (persistent irritable mood) from phasic irritability (episodic temper outbursts), yet little is known about how these dimensions co-develop across adolescence into young adulthood...