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Participants included 22 average readers and 13 dyslexic readers (8\u20139\u2009years old in third grade); the dyslexic readers were enrolled in reading intervention programs at their elementary school. Participants completed scans of diffusion tensor imaging and T1\u2010weighted MRI before and after 3 months of instruction. An a priori region of interest (ROI) analysis was used. Dyslexic readers, compared to average readers, showed higher mean diffusivity in white matter ROIs including bilateral inferior frontal, bilateral insula, left superior temporal, and right supramarginal gyri across time points. Dyslexic readers also had thicker cortex in left fusiform and bilateral supramarginal gyri; whereas, average readers had greater surface area in right fusiform across time. There were no significant changes in white or grey matter following intervention; however, mean diffusivity in the right hemisphere was associated with reading gains over time. White matter organization in the right hemisphere predicts reading changes, and dyslexic readers may have persistent differences in white and grey matter due to ongoing reading deficits.<\/jats:p>","DOI":"10.1002\/dys.1668","type":"journal-article","created":{"date-parts":[[2020,9,22]],"date-time":"2020-09-22T09:36:30Z","timestamp":1600767390000},"page":"224-244","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["White matter but not grey matter predicts change in reading skills after intervention"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1018-9778","authenticated-orcid":false,"given":"Marita","family":"Partanen","sequence":"first","affiliation":[{"name":"Department of Educational &amp; Counselling Psychology, and Special Education The University of British Columbia  Vancouver British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Danny H. 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