{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T01:45:46Z","timestamp":1790127946699,"version":"4.0.1"},"reference-count":33,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2004,9,7]],"date-time":"2004-09-07T00:00:00Z","timestamp":1094515200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dyslexia"],"published-print":{"date-parts":[[2004,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Aim<\/jats:italic>: Deficits in timing and sequencing behaviour in children with dyslexia and with attention\u2010deficit hyperactivity disorder have already been identified. However many studies have not controlled for comorbidity between dyslexia and ADHD. This study investigated timing performance of children with either dyslexia or ADHD, or ADHD + dyslexia or unaffected children using a finger\u2010tapping paradigm.<\/jats:p><jats:p><jats:italic>Method<\/jats:italic>: Four groups of children (ADHD \u00d7 Dyslexia) with a total of 68 children were compared using a four factorial design with two between\u2010subject factors (ADHD (yes\/no), dyslexia (yes\/no)) and two within\u2010subject factors, inter\u2010stimulus interval (263, 500, 625, 750, 875 and 1000 ms) and tapping condition (free tapping, synchronous tapping, and unpaced tapping). In addition the complexity of rhythm reproduction pattern (unpaced tapping) was varied (simple\/complex).<\/jats:p><jats:p><jats:italic>Results<\/jats:italic>: No significant differences were found either in the ability of the ADHD or the dyslexia groups to sustain a self\u2010chosen free tapping rate or to generate a stable inter\u2010response interval either by synchronising to a signal or in reproducing a given interval without the previous pacing signal. Response averages showed the expected asynchrony and variability. In rhythm pattern reproduction the groups did not differ significantly in their ability to reproduce rhythms. However, a significant two way interaction effect between dyslexia and complexity was apparent indicating that the difference in levels of performance for simple versus complex rhythms was more pronounced for dyslexia than for the two other groups.<\/jats:p><jats:p><jats:italic>Conclusion<\/jats:italic>: The results indicate that motor timing ability in the millisecond range below 1000 ms in children with ADHD and\/or dyslexia is intact. The performance of the comorbid group was revealed to be similar to the performance of the single disorder groups, but both the dyslexic groups were relatively worse than either the ADHD\u2010only or the unimpaired group at reproducing complex versus simple rhythms. Copyright \u00a9 2004 John Wiley &amp; Sons, Ltd.<\/jats:p>","DOI":"10.1002\/dys.281","type":"journal-article","created":{"date-parts":[[2004,9,14]],"date-time":"2004-09-14T08:06:26Z","timestamp":1095149186000},"page":"299-315","source":"Crossref","is-referenced-by-count":40,"title":["Time reproduction in finger tapping tasks by children with attention\u2010deficit hyperactivity disorder and\/or dyslexia"],"prefix":"10.1002","volume":"10","author":[{"given":"Margaret","family":"C. Tiffin\u2010Richards","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcus","family":"Hasselhorn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael L.","family":"Richards","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tobias","family":"Banaschewski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aribert","family":"Rothenberger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2004,10,26]]},"reference":[{"key":"e_1_2_1_2_1","volume-title":"Manual for the child behavior checklist 4\u201018 and 1991 profile","author":"Achenbach T. 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