a) Syndrome-based model without controls. All syndrome factors (and the two manifest variables of inattention and hyperactivity) were separately regressed upon pubertal timing, gender, and the interaction of pubertal timing and gender. b) Internalizing and Externalizing model. In this model, internalizing and externalizing factors were regressed upon pubertal timing, gender, and the interaction of pubertal timing and gender. c) P-factor model. In this model, the p-factor as well as the internalizing and externalizing factors were each regressed upon pubertal timing, gender, and the interaction of pubertal timing and gender. Note: reporter and random intercept factors omitted for clarity in all models. ODD = Oppositional Defiant Disorder; C = child report; P= parent report.