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Adult ADHD. Controlled medication assessment.

M Kinsbourne1, G B De Quiros, D Tocci Rufo

  • 1New School University, 65 Fifth Avenue, New York, NY 10003, USA. kinsbourne@aol.com

Annals of the New York Academy of Sciences
|July 21, 2001
PubMed
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Methylphenidate effectively treats attention deficit hyperactivity disorder (ADHD) in adults. Objective testing identified optimal medication dosages, improving patient outcomes and reducing trial-and-error treatment.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Pharmacology

Background:

  • Adult attention deficit hyperactivity disorder (ADHD) often requires stimulant therapy.
  • Controlled medication assessments for ADHD treatment are not widely reported.

Purpose of the Study:

  • To assess the dose-response effects of methylphenidate on an objective measure of working memory in adults with ADHD.
  • To determine if objective testing can expedite the identification of optimal stimulant dosages.

Main Methods:

  • Seventeen adults with ADHD participated in a double-blind, placebo-controlled study.
  • Participants completed an effortful working memory task across four sessions with varying methylphenidate doses (0, 5, 10, 20 mg).
  • Individual dose-response curves were generated to evaluate performance metrics (correct responses, variability).

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Main Results:

  • Fifteen out of 17 patients showed a favorable response to at least one methylphenidate dose.
  • Optimal performance was observed at different dose levels for individual patients.
  • Objective assessment identified improved performance and reduced variability compared to placebo.

Conclusions:

  • Objective, task-based assessment provides an efficient method for determining optimal methylphenidate dosage in adults with ADHD.
  • This approach can potentially reduce treatment duration and avoid ineffective or excessive dosages.
  • Methylphenidate demonstrates efficacy in improving cognitive performance in adults with ADHD.