The 25-item Strengths and Difficulties Questionnaire (SDQ) is a brief behavioural screening questionnaire about persons 2-17 years old. It exists in several versions to meet varying needs. All versions of the SDQ ask about 25 attributes, some positive and others negative. These 25 items are divided between 5 scales: emotional symptoms, conduct problems, hyperactivity/ inattention, peer relationship problems, and prosocial behavior.
This is a one page overview of the Strengths and Difficulties Questionnaire (SDQ)