Introduction
Bipolar disorders in adolescents often go unrecognized or clinicians misdiagnose them as unipolar depression or other conditions, leading to delayed treatment and poorer outcomes. Early screening is therefore essential for improving diagnostic accuracy and guiding appropriate interventions. The Mood Disorder Questionnaire for Adolescents (MDQ-A), an adapted version of the original adult MDQ, serves as a practical self-report or proxy-report tool to detect lifetime manic and hypomanic symptoms aligned with DSM criteria.
Moreover, Hirschfeld et al. (2000) developed the MDQ-A by building on the adult MDQ, and researchers have since validated it specifically for adolescent populations. Key studies have demonstrated its utility in outpatient psychiatric settings, where it helps differentiate bipolar spectrum disorders—including bipolar I, II, NOS, and cyclothymia—from other mood disturbances. With validations showing promising sensitivity and specificity, particularly in parent-report formats, the MDQ-A has gained recognition among researchers and clinicians for its brevity and focus on symptom clustering and impairment.
Therefore, this article explores the MDQ-A’s structure, psychometric properties, applications, and considerations, providing actionable insights for researchers conducting studies on adolescent mood disorders and clinicians assessing at-risk youth.
Key Features of the Mood Disorder Questionnaire for Adolescents (MDQ-A)
Purpose and Use
The MDQ-A primarily screens for bipolar spectrum disorders by assessing lifetime occurrence of manic/hypomanic symptoms. It evaluates symptom presence, clustering (symptoms occurring simultaneously), and associated functional impairment. Consequently, it helps identify adolescents who may require further diagnostic evaluation, reducing risks of misdiagnosis and supporting targeted treatment planning.
Target Population
The MDQ-A is meticulously designed for
- adolescents (13–17 years)
It is suitable for those presenting with mood symptoms, behavioral issues, or risk factors for bipolar disorder. Furthermore, both self-report and parent-report versions accommodate developmental differences in insight and reporting accuracy.
Structure
The MDQ-A consists of 15 items. These items are divided into three distinct sections to ensure a comprehensive evaluation:
- Symptom Screen (13 items): This section includes 13 Yes/No items investigating elevated mood, irritability, sleep patterns, libido, and energy.
- Symptom Clustering (1 item): This question assesses whether endorsed symptoms occurred during the same time period.
- Functional Impairment (1 item): A final question gauges the severity of problems caused by these symptoms.
Scoring Method
To ensure accuracy, clinicians must follow a specific three-step scoring protocol:
- Step 1 (Symptoms Screen): The respondent answers 13 questions with “Yes” or “No”. Each Yes answer counts as 1 point and each No counts as 0 points.
- Step 2 (Symptom Clustering): The answer is either “Yes” or “No”.
- Step 3 (Functional Impairment): The answer is rated on a 4-point scale:
- No problem (0 points)
- Minor problem (1 point)
- Moderate problem (2 points)
- Serious problem (3 points)
Therefore, clinicians deem a screen positive and suggest a higher likelihood of bipolar disorder only when it meets the following criteria:
- Symptom Threshold: The respondent must answer “Yes” to at least 5 or more items in Part 1.
- Clustering: The respondent must indicate “Yes” in Part 2, confirming symptoms occurred together.
- Severity: In Part 3, the functional impairment must be rated as “Moderate” or “Serious”.
In summary, a screen is positive only if all three criteria are met simultaneously.
Although the MDQ-A demonstrates high sensitivity, researchers should note its lower specificity, as symptoms may overlap with ADHD or borderline personality disorder. Thus, professional follow-up is always necessary.
Administration Format
The MDQ-A is a self-administered or proxy-administered (parent-report) questionnaire. It can be completed via
- Paper-based
- Digital (online)
- Interview (in person)
In addition, completion typically takes about 5-10 minutes, making it efficient for busy clinical and research environments.
Applications of the Mood Disorder Questionnaire for Adolescents (MDQ-A)
Moreover the MDQ-A offers versatile applications in research and clinical practice:
- Screening: Efficiently identifies at-risk adolescents for bipolar spectrum disorders in psychiatric, school, or primary care settings.
- Monitoring: Tracks symptom history over time, though less suited for measuring treatment response due to its lifetime focus.
- Research Endpoint: Serves as an outcome measure in studies on prevalence, risk factors, comorbidity, and early intervention for adolescent mood disorders.
Languages and availability
The MDQ-A is available in several languages, which enhances its global applicability, These include:
- English
- French
- Korean
In addition, the MDQ-A is Free for clinical/educational screening use. However, clinicians and researchers must request permission or license if they plan to reproduce, publish, translate, or use it commercially.
Reliability and Validity
Statistically, the MDQ-A is a highly reliable and valid instrument. In adolescent studies, researchers reported a Cronbach’s alpha between 0.80 and 0.90, which shows strong internal consistency. However, while it offers high sensitivity—especially in parent-report versions—it possesses lower specificity. Therefore, clinicians should interpret positive results cautiously because ADHD or borderline personality disorder symptoms can mimic bipolar signs.
Validation Studies:
Limitations and Considerations
Despite its strengths, the MDQ-A has a few limitations:
- Self-report measure: Results may be influenced by the adolescent’s subjective interpretation or a lack of insight into their behavior.
- Cultural Bias: Potential cultural factors may affect how symptoms are reported across diverse populations.
- Limited Validation: While effective, it has a limited number of validation studies compared to adult versions and lacks sensitivity to change for tracking treatment progress.
- Lack of Sensitivity to Change: Because the MDQ-A assesses lifetime symptoms with binary (Yes/No) answers, it cannot track treatment progress or clinical fluctuations over time.
Other Versions And Related Questionnaires
It is crucial to select the correct version for your population. The MDQ-A is one of two main versions:
- Mood Disorder Questionnaire (MDQ) – Original Adult Version
- 3 MDQ-A versions exist:
adolescent self-report
attributional report (how the youth believes others see them)
and parent report
Clinicians also use the MDQ-A alongside with other tools such as
- General Behavior Inventory (GBI)
- Child Behavior Checklist (CBCL)
- Young Mania Rating Scale (YMRS)
- Child Bipolar Questionnaire (CBQ)
Additional Resources
- A direct link to the Original Validation Study link
- You can access the questionnaire as a PDF through this link
- For inquiries, contact Karen Dineen Wagner or Robert M.A. Hirschfeld, the lead authors of the questionnaire via e-mail: kwagner@utmb.edu & roh9080@med.cornell.edu
Frequently Asked Questions (FAQ)
- Who can use the MDQ-A?
Clinicians, researchers, and healthcare providers use the MDQ-A for adolescents aged 13 to 17 who are being screened for bipolar disorders.
- How long does it take to complete the MDQ-A?
Patients typically take 5 to 10 minutes to complete the MDQ-A, which makes it feasible for use in clinical and research settings.
- How is the MDQ-A administered?
Healthcare teams can administer the questionnaire via paper, digital, or interview formats—offering flexibility in usage.
- Is there any cost to using the MDQ-A?
The MDQ-A is free for clinical and educational screening use. However, users must obtain permission or license for reproduction, translation, or commercial use.
A Word From ResRef about the Mood Disorder Questionnaire for Adolescents (MDQ-A)
The MDQ-A is a valuable, efficient, and widely-used first-line screening tool for bipolar spectrum disorders in adolescent populations. particularly, its moderate sensitivity and clinicians should combine its results with a thorough diagnostic assessment when they detect risk. Moreover, they should remain aware of limitations such as overlapping symptoms profiles.
References
- Wagner, K. D., Hirschfeld, R. M., Emslie, G. J., Findling, R. L., Gracious, B. L., & Reed, M. L. (2006). Validation of the Mood Disorder Questionnaire for bipolar disorders in adolescents. The Journal of Clinical Psychiatry, 67(5), 827–830. Link
- Shim, S. H., Lee, J., Song, J. H., Nam, B., Yoon, B. H., Jin, H. Y., Sung, H. M., Jeong, J. H., Jang, S. H., Jon, D. I., Woo, Y. S., & Bahk, W. M. (2018). Screening with the Korean Version of the Mood Disorder Questionnaire for Bipolar Disorders in Adolescents: Korean Validity and Reliability Study. Clinical Psychopharmacology and Neuroscience, 16(3), 316–323. Link
