Plugging the attention deficit: perceptual load counters increased distraction in ADHD

Forster, Sophie, Robertson, David J, Jennings, Alistair, Asherson, Philip and Lavie, Nilli (2014) Plugging the attention deficit: perceptual load counters increased distraction in ADHD. Neuropsychology, 28 (1). pp. 91-97. ISSN 0894-4105

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Abstract

Objective: Increased vulnerability to extraneous distraction is a key symptom of Attention-Deficit Hyperactivity Disorder (ADHD), which may have particularly disruptive consequences. Here we apply Load Theory of attention to increase understanding of this symptom, and to explore a potential method for ameliorating it. Previous research in nonclinical populations has highlighted increased perceptual load as a means of improving the ability to focus attention and avoid distraction. The present study examines whether adults with ADHD can also benefit from conditions of high perceptual load to improve their focused attention abilities. Method: We tested adults with ADHD and age- and IQ-matched controls on a novel measure of irrelevant distraction under load, designed to parallel the form of distraction that is symptomatic of ADHD. During a letter search task, in which perceptual load was varied through search set size, participants were required to ignore salient yet entirely irrelevant distractors (colorful images of cartoon characters) presented infrequently (10% of trials). Results: The presence of these distractors produced a significantly greater interference effect on the search RTs for the adults with ADHD compared with controls, p = .005, ηp² = .231. Perceptual load, however, significantly reduced distractor interference for the ADHD group and was as effective in reducing the elevated distractor interference in ADHD as it was for controls. Conclusions: These findings clarify the nature of the attention deficit underlying increased distraction in ADHD, and demonstrate a tangible method for overcoming it. (PsycINFO Database Record (c) 2013 APA, all rights reserved).

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Subjects: Q Science > QZ Psychology
Depositing User: Sophie Forster
Date Deposited: 03 Feb 2014 09:08
Last Modified: 09 Mar 2017 06:11
URI: http://sro.sussex.ac.uk/id/eprint/47454

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