Keytapping and delayed feedback.
D001299:Audiometry; D001925:Brain Damage, Chronic / Q000150:complications; D002648:Child; D002675:Child, Preschool; D005246:Feedback; D005260:Female; D006311:Hearing Disorders / Q000150:complications; D006801:Humans; D008297:Male; D013064:Speech Disorders / Q000209:etiology