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Aggressive behavior (anger and hostility) of adult participants were assessed in the context of an additional questionnaire on ADHD.
The questions were derived from the Adult Self-Report (ASR), a 126-item questionnaire on the emotional skills and difficulties experienced by adults, and its equivalent the Adult Behavior Checklist (ABCL) filled in by close acquaintances1).
In QADH, only the ASR/ACBL subscale on aggressive behavior was used. Other mental health scales were assessed using various other instruments.
Anger and hostility in underage participants were assessed using two general questions in QADH.