Vanderbilt Assessment Scales (VAS)

Abstract

The Vanderbilt Assessment Scales (VAS), developed in 2002 by the American Academy of Pediatrics (AAP) and the National Initiative for Children’s Healthcare Quality (NICHQ), originated from a project designed to establish and implement a standardized model of care for children diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD). The VAS is a brief, multi-informant rating scale completed by both parents and teachers. Its primary function is the systematic assessment of core ADHD symptoms, including inattention and hyperactivity, while also screening for common comorbid conditions such as conduct disorder, oppositional defiance disorder (ODD), anxiety, depression, and evaluating academic performance.

Keywords

Vanderbilt Assessment Scales, VAS, ADHD, Inattention, Hyperactivity, Conduct Disorder, Oppositional Defiance Disorder, Anxiety, Depression, Rating Scale, NICHQ, AAP, Screening Tool, Comorbidity.

Authors

The scale was developed by a collaborative effort led by the American Academy of Pediatrics (AAP) and the National Initiative for Children’s Healthcare Quality (NICHQ). Key contributors and researchers involved in the psychometric validation include Mark L. Wolraich, D.E. Bard, B. Neas, M. Doffing, and L. Beck.

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Purpose

The central purpose of the Vanderbilt Assessment Scales is to provide clinicians with a standardized, easy-to-use, and psychometrically sound method for gathering essential diagnostic data from multiple informants—namely parents and teachers—during the evaluation process for ADHD in children. It facilitates the determination of whether a child meets the diagnostic criteria for ADHD symptoms based on the Diagnostic and Statistical Manual of Mental Disorders (DSM) criteria.

Beyond core symptom assessment, the VAS is highly useful for screening potential comorbid conditions, establishing a behavioral baseline prior to intervention, and subsequently measuring the effectiveness of treatments, such as medication or behavioral therapy (Kratochvil et al., 2009). Its straightforward design allows clinicians to quickly assess the severity and pervasiveness of symptoms across different settings (home and school) and is highly acceptable to clinicians (Bard et al., 2013).

Construct

The VAS is designed to measure several distinct, yet often related, psychological and behavioral constructs relevant to child mental health and academic functioning. The primary constructs assessed align directly with the criteria for Attention-Deficit/Hyperactivity Disorder, specifically the dimensions of Inattention and Hyperactivity/Impulsivity.

Secondary constructs include common comorbid externalizing and internalizing disorders. These are Conduct Disorder, Oppositional Defiance Disorder (ODD), Anxiety, and Depression. Uniquely, the scale also incorporates items dedicated to assessing Academic Performance and overall behavioral functioning, providing a comprehensive view of the child’s impairment across critical domains.

Validity

Evidence supports the validity of the VAS as a robust screening tool for ADHD and comorbid conditions. The scale demonstrates a clear four-factor structure, confirming its ability to measure distinct constructs: Inattention, Hyperactivity, Conduct Disorder/Oppositional Defiance Disorder, and Anxiety/Depression. Convergent validity is supported by moderate to high correlations observed between the VAS and the established Diagnostic Interview Schedule for Children-IV Parent Version (DISC-IV) (Bard et al., 2013; Collett et al., 2003).

When used for prediction, the parent scale alone showed a sensitivity (true positives) of 80% and a specificity (true negatives) of 75% for predicting an ADHD diagnosis. A significant finding regarding combined use is that while combining parent and teacher scales decreased the positive predictive value (PPV) to 19%, it dramatically increased the negative predictive value (NPV) to 98%. This suggests the combined scale is exceptionally effective at identifying children who do not have ADHD. A recognized limitation, however, is the lack of published evidence demonstrating satisfactory discriminant validity.

Reliability

The VAS demonstrates strong internal consistency, a measure of internal reliability. The Cronbach’s alpha coefficient for the parent scale is reported as excellent (> .90), and the teacher scale is also very good (> .89) (Wolraich et al., 2002; Wolraich et al., 2013). These high coefficients indicate that the items within each respective scale reliably measure the intended constructs.

Test-retest reliability was assessed as adequate, with correlation coefficients (r) generally exceeding .80 (Bard et al., 2013). Conversely, interrater reliability, which measures the agreement between parent and teacher ratings, is notably low, ranging from r = .27 to .34 (Wolraich et al., 2002). This low correlation is typical for multi-informant measures in child psychopathology and underscores the necessity of collecting data from both settings, as symptoms manifest differently depending on the environment.

Factor Analysis

Factor analytic studies support a robust four-factor structure underlying the Vanderbilt Assessment Scales. This structure confirms that the scale items cluster into meaningful dimensions that align with established diagnostic categories. The four confirmed factors are: Inattention, Hyperactivity/Impulsivity, a combined factor for Conduct Disorder and Oppositional Defiance Disorder, and a factor grouping Anxiety/Depression symptoms.

The validity of this four-factor model confirms the instrument’s utility in screening for multiple disorders concurrently, consistent with the goals set forth by the AAP and NICHQ to improve comprehensive care for children with behavioral health concerns.

Instrument

Test Type: Multi-informant Behavior Rating Scale (Parent and Teacher versions)

Format: Paper-and-pencil or Digital administration; items are typically rated on a Likert-type frequency scale.

Language Available: English, Spanish, German (based on reported usage in diverse populations).

Population Group: Clinical and community samples of children.

Age Group: School-aged children (Note: items may be less relevant for younger, pre-school aged children).

Population Details: The scale has been validated across diverse groups, including American, African American, Hispanic, Spanish, and German children residing in rural, urban, and suburban areas, encompassing both high-risk and low-risk populations for ADHD. Only small differences were noted based on gender, age, school grade, or severity of ADHD symptoms (Wolraich et al., 2002).

Test Methodology: The scale utilizes items derived directly from the DSM criteria. Scoring involves summing item responses; diagnostic criteria are met if a specified number of symptoms are rated as occurring “often” or “very often.” The scale is noted for its simplicity and is intended strictly as a screening tool, not a standalone diagnostic instrument.

Keywords

Behavioral assessment, Psychometrics, Rating Scale, Diagnostic screening, Comorbid disorders, Parent rating, Teacher rating, NICHQ, DSM criteria, Internal consistency, Cronbach’s alpha.

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Authors

Author ORCID Identifier: Not specified in source material.

Affiliation Email addresses: Not specified in source material.

Correspondence Address: Correspondence is typically directed through the National Initiative for Children’s Healthcare Quality (NICHQ).

Permissions & Fee and Test Year

The Vanderbilt Assessment Scales were initially released in 2002. The scales are generally available for public use, often without charge, as they were developed by non-profit organizations (AAP and NICHQ) as part of a public health initiative to improve ADHD care. The scale is readily accessible online via the NICHQ website: https://www.nichq.org/resource/nichq-vanderbilt-assessment-scales.

Reference’s

• American Psychiatric Association (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Washington, DC: Author.

• Austerman, J. (2015). ADHD and behavioral disorders: Assessment, management, and an update from DSM-5. Cleveland Clinic Journal of Medicine, 82, S2-S7.

• Bard, D.E., Wolraich, M.L., Neas, B., Doffing, M., & Beck, L. (2013). The psychometric properties of the Vanderbilt attention-deficit hyperactivity disorder diagnostic parent rating scale in a community population. Journal of Developmental and Behavioral Pediatrics, 34, 72-82.

• Becker, S.P., Langberg, J.M., Vaughn, A.J., & Epstein, J.N. (2012). Clinical utility of the Vanderbilt ADHD diagnostic parent rating scale comorbidity screening scales. Journal of Development and Behavioral Pediatrics, 33, 221-228.

• Collett, B.R., Ohan, J.L., & Myers, K.M. (2003). Ten-year review of rating scales. V: Scales assessing attention-deficit/hyperactivity disorder. Journal of the American Academy of Child & Adolescent Psychiatry, 42, 1015-1037.

• Fields, S.A., & Hale, L.R. (2011). Psychoeducational groups for youth attention-deficit hyperactivity disorder: a family medicine pilot project. Mental Health in Family Medicine, 8, 157-165.

• Kratochvil, C.J., Vaughan, B.S., Barker, A.M.., Corr, L., Wheeler, A., & Madaan, V. (2009). Review of pediatric attention deficit/hyperactivity disorder for the general psychiatrist. Psychiatric Clinics of North America, 32, 39-56.

• Molina Healthcare (2017). Behavioral health provider toolkit. Retrieved from: http://www.molinahealthcare.com/providers/common/PDF/Behavioral-Health-Toolkit-for-Specialists.pdf (Note: The original PDF can be downloaded here: Molina Healthcare Behavioral Health Provider Toolkit PDF)

• National Initiative for Children’s Healthcare Quality (2017). Attention Deficit Hyperactivity Disorder (ADHD) Learning Collaborative. Retrieved from: https://www.nichq.org/project/attention-deficit-hyperactivity-disorder-adhd-learning-collaborative

• National Initiative for Children’s Healthcare Quality (2017). NICHQ Vanderbilt assessment scales. Retrieved from: https://www.nichq.org/project/attention-deficit-hyperactivity-disorder-adhd-learning-collaborative

• Wolraich, M.L., Bard, D.E., Neas, B., Doffing, M., & Beck, L. (2013). The psychometric properties of the Vanderbilt attention-deficit hyperactivity disorder diagnostic teacher rating scale in a community population. Journal of Developmental and Behavioral Pediatrics, 34, 83-93.

• Wolraich, M.L., Lambert, W., Doffing, M.A., Bickman, L.B., Simmons, T., & Worley, K. (2003). Psychometric properties of the Vanderbilt ADHD diagnostic parent rating scale in a referred population. Journal of Pediatric Psychology, 28. 559-568.

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Items of the Vanderbilt Assessment Scales (VAS)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The specific items comprising the Vanderbilt Assessment Scales were not provided in the source content.