This bibliography lists most peer-reviewed papers on the Quotient System and links are provided to the publisher. You can read the abstract and, in some cases, you can read the entire paper. The posters are available as PDFs.

The Quotient ADHD System is FDA cleared to provide clinicians with objective measures of hyperactivity, impulsivity and inattention to aid in the clinical assessment of ADHD. This medical and scientific information is provided for educational purposes. Some uses may not have been cleared by the FDA for the Quotient ADH System. Financial interests, where applicable, are disclosed in individual papers.


F. Xavier Castellanos, FX, et. Al. A Preliminary Examination of Resting State Functional Connectivity Correlates of Motor Activity AACAP Poster Session 2010.

Hasson H, Horvath, K, Wishik, J, Hartman, D. Does Implementation of Quantitative Measurements of Activity and Attention Improve Outcomes Associated with Optimal Medication Titration in Patients with ADHD? US Psych Congress 2013 Poster Session. 2013

Hughes, C, Bolanos, G, Silver, C, Pickering, J, D., Hum., Baker, K. Assessment of Attention and Motion in Children with an Oral Language Disorder and Attention-Deficit/Hyperactivity Disorder. AACAP Poster Session. 2010.

Polcari A, Fourligas N, Navalta C, Teicher MH. Hyperactivity Persists in Male and Female Adults with ADHD and Remains a Highly Discriminative Feature of the Disorder. AACAP Poster Session. 2010.

Sumner, CR, Ritchie, CA, Hoadley, K. Pilot Study: Detecting Feigned ADHD with Computerized Technology. APSARD Poster Session. 2013.

Sumner; CR, Sutton, VK; Newcorn J Does Placebo Response Differ Between Objective and Subjective ADHD Measures? AACAP Poster Session. 2009

Publications about the Quotient System (Formerly known as MMAT)

Anderson C, Polcari A, Lowen S, Renshaw P, Teicher M. Effects of Methylphenidate on Functional Magnetic Resonance Relaxometry of the Cerebellar Vermis in Boys With ADHD. American Journal of Psychiatry. 2002; 159:(8), 1322.

Heiser P, Frey J, Smidt C, Sommerlad P, Wehmeier M, Hebebrand J, Remschmidt H. Objective measurement of hyperactivity, impulsivity, and inattention in children with hyperkinetic disorders before and after treatment with methylphenidate. European Child & Adolescent Psychiatry. 2004;13: 100.

Sumner, CR, Sutton, VS, Teicher, MH and Newcorn, JH. Does Placebo Response Differ Between Objective and Subjective ADHD Measures in Children with Attention-Deficit/Hyperactivity Disorder? Postgraduate Medicine. 2010; 122(5), 52-61.

Sumner, CR New Tool for Objective Assessment of ADHD: The Quotient® ADHD System. The ADHD Report. 2010; 18(5), 6-9.

Tabori-Kraft, Janne; Sorensen, Merete;Kerguard, Martin; Dalsgaard, Soren; Thomsen, Per Hove.Is MMAT (Quotient) useful for monitoring the effect of stimulants on hyperactivity and inattention? A brief report, European Child and Adolescent Psychiatry. May 2007.

Teicher M, Ohashi K, Vialiano G, Polcari A. Unraveling the Nature of Hyperactivity in Children with Attention-Deficit/Hyperactivity Disorder. Arch Gen Psychiatry, 2010:67(4), 388-396.

Teicher M, Polcari A, McGreenery C. Utility of Objective Measures of Activity and Attention in the Assessment of Therapeutic Response to Stimulants in Children with ADHD. Journal of Child and Adolescent Psychopharmacology. 2008:18,3, 265-270.

Teicher M, Polcari A, Foley M, Valente E, McGreenery C, Chang W, McKay G, Midha K. Methylphenidate Blood Levels and Therapeutic Response in Children with ADHD: Effects of Different Dosing Regimens. Journal of Child and Adolescent Psychopharmacology.2006; 16:(4) 416-431.

Teicher M, Lowen S, Polcari A, Foley M, McGreenery C. Novel Strategy for the Analysis of CPT Data Provides New Insight into the Effects of Methylphenidate on Attentional States in Children with ADHD. Journal of Child And Adolescent Psychopharmacology. 2004;14:2.

Teicher M, Polcari A, Anderson C, Andersen S, Lowen S, Navalta C. Rate Dependency Revisited: Understanding the Effects of Methylphenidate in Children with Attention Deficit Hyperactivity Disorder. Journal of Child and Adolescent Psychopharmacology. 2003;13:1, 41.

Teicher M, Anderson C, Polcari A, Glod C, Maas L, Renshaw P. Functional Deficits in Basil Ganglia of Children with Attention-Deficit/Hyperactivity Disorder Shown with Functional Magnetic Resonance Imaging Relaxometry. Nature Medicine 2000; 6 (4):470.

Teicher M, Ito Y, Glod C, Barber N. Objective Measurement of Hyperactivity and Attentional Problems in ADHD. J American Academy of Child and Adolescent Psychiatry. 1996; 35(3): 334.

Publications about ADHD

ADHD: Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents. Pediatrics 2011 128:1007-1022; doi:10.1542/peds.2011-2654

Jensen PS et. al. Findings from the NIMH multimodal treatment study of ADHD (MTA): implications and applications for primary care providers. J Dev Behav Pediatr. 2001;22(1):60-73.

Leslie, LK, et. al. Implementing the American Academy of Pediatrics Attention-Deficit/Hyperactivity Disorder Diagnostic Guidelines in Primary Care Settings. Pediatrics. 2004; 114(1):129-140.

Waschbusch, DA, et. al. Are There Placebo Effects in the Medication Treatment of Children with Attention-Deficit Hyperactivity Disorder? Journal of Developmental and Behavioral Pediatrics. 2009; 30(2):158-168.