Although none of the participants were diagnosed with psychiatric disorders specified in the K-SADS-PL, sub-threshold and threshold symptoms were tallied in order to provide some indication of possible sub-diagnostic indicators of psychiatric vulnerability. Across the entire sample, some symptoms were endorsed for each diagnostic category addressed in the K-SADS-PL, with the exception of mania, enuresis, encopresis, anorexia or bulimia. No difference in symptom counts for individual diagnoses was found between the AD and control groups; however, when externalizing symptom groups were clustered together (namely ADHD, oppositional defiant disorder and conduct disorder), the AD group demonstrated a tendency to endorse more symptoms than the control group (F=5.07, sig. =.03).
