The SDQ (Strengths and Difficulties Questionnaire) is a brief, 25-item behavioral screening tool designed to assess emotional and behavioral functioning in children and adolescents ages 2 to 17. Unlike many assessments that focus only on pathology, the SDQ is unique because it also measures “prosocial behavior,” providing clinicians and educators with a balanced view of a child’s psychological strengths alongside their challenges.

• Broad Utility: It is widely used in healthcare, social services, and education for initial triage, screening for developmental risks, and monitoring the impact of interventions over time.

The SDQ is divided into five distinct subscales, each containing five items, to provide a comprehensive psychosocial profile:

• Emotional Symptoms: Highlighting internalizing distress like anxiety and low mood.
• Conduct Problems: Identifying externalizing behaviors and aggression.
• Hyperactivity/Inattention: Flagging potential ADHD-related symptoms.
• Peer Relationship Problems: Tracking social difficulties and isolation.
• Prosocial Behavior: Measuring strengths such as empathy and helpfulness.

The SDQ is scored by summing the items for each of the five subscales. A “Total Difficulties Score” is then generated by adding the scores of the first four scales (excluding Prosocial Behavior).

• Total Difficulties (0–40): Higher scores indicate a greater need for clinical support.
• Prosocial Score (0–10): Unlike the other scales, a higher score here is a positive indicator, reflecting strong social skills and protective factors.
• Interpretation: Scores are typically categorized as “Close to Average,” “Raised,” or “High” based on established population norms.

The SDQ is designed to be completed by multiple people in a child’s life to provide a “360-degree” perspective:

Parents & Teachers: Available for children as young as 2 years old.

Self-Report: Available for adolescents ages 11 to 17 who have a sufficient reading level.

Clinical Value: Comparing a teacher’s report with a parent’s report often reveals “context-specific” behaviors (e.g., a child who is only hyperactive at school), which is critical for accurate assessment.

No, the SDQ is a screening tool used to identify “at-risk” children; it does not provide a formal diagnosis. A high score on the “Hyperactivity” or “Conduct” subscales is a signal that further diagnostic testing—such as a full clinical interview or a dedicated ADHD assessment—is necessary.

The SDQ is a broad “all-rounder” tool, while the RCADS-25 is a “specialist” tool for internalizing disorders.

• Use the SDQ: When you need to screen for a wide range of issues, including behavior, social skills, and attention.
• Use the RCADS-25: When you need a deep-dive into the specific symptoms of childhood anxiety and depression.
• Pro-Tip: Many clinics use the SDQ for initial intake and the RCADS-25 for ongoing monitoring of children with identified mood or anxiety disorders.

Yes, the SDQ is one of the most rigorously researched and validated brief behavioral screens in the world. It has been translated into over 80 languages and is supported by a massive body of peer-reviewed evidence proving its reliability and validity across different cultures and clinical settings.

Digital SDQ tracking via MyOutcomes automates the scoring of all five subscales and the Total Difficulties Score, providing an instant visual “Profile” of the child. This allows clinicians to quickly identify which specific area (e.g., Peer Problems vs. Conduct) requires the most immediate attention. Furthermore, digital tracking makes it easy to compare parent, teacher, and child reports side-by-side, surfacing discrepancies that can be addressed directly in family or school-based therapy.