Situation-specific outcomes (Home Situations Questionnaire) in a randomized controlled trial of individual versus group parent training for children with Hyperkinetic Disorder/Attention-deficit Hyperactivity Disorder.

CBPT clearly adds to TAU (with effect sizes in the small to moderate range depending on situation). Individual was somewhat more successful than group format (which did not succeed in a wider range of situations). HSQ situations reveal a differentiated picture of child behaviour and treatment results. Situation-specific assessment with an instrument like the HSQ offers promising perspectives that invite further development.