Associations between infant and toddler regulatory problems, childhood co‐developing internalising and externalising trajectories, and adolescent depression, psychotic and borderline personality disorder symptoms

Early regulatory problems (RPs) are associated with childhood internalising and externalising symptoms. Internalising and externalising symptoms, in turn, are associated with adolescent psychopathology (e.g. personality disorders, depression). We examined whether RPs are directly associated with adolescent psychopathology, or whether associations are indirect via childhood internalising and externalising symptoms.We used data from the Avon...