As many as one in five children are affected by dyslexia. This is the number one problem with reading in schools. Dyslexia is a brain based language disability. MRI scans can show people with Dyslexia use a different part of their brain when reading. To test your child for Dyslexia you’ll want to find a reputable child psychologist, educational psychologist or neuropsychologist who specifically evaluates for dyslexia.