En undersøgelse fra 2009 viser, at børn med ADHD flytter meget rundt, fordi det hjælper dem med at løse komplicerede opgaver.<ref name="Rapport">{{Cite journal|author=Rapport MD, Bolden J, Kofler MJ, Sarver DE, Raiker JS, Alderson RM |title=Hyperactivity in boys with attention-deficit/hyperactivity disorder (ADHD): a ubiquitous core symptom or manifestation of working memory deficits? |journal=J Abnorm Child Psychol |volume=37 |issue=4 |pages=521–34 |date=maj 2009 |pmid=19083090 |doi=10.1007/s10802-008-9287-8 |url=https://archive.org/details/sim_journal-of-abnormal-child-psychology_2009-05_37_4/page/521}}</ref><ref>{{cite web |url=http://www.eurekalert.org/pub_releases/2009-03/uocf-ush030909.php |title=UCF study: Hyperactivity enables children with ADHD to stay alert |author=University of Central Florida |date=9. marts 2009 |access-date=2012-01-29 |archive-date= 3. december 2018 |url-status=live |archive-url=https://web.archive.org/web/20181203094833/https://www.eurekalert.org/pub_releases/2009-03/uocf-ush030909.php }}</ref>
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