Leonard F. Koziol is a clinical neuropsychologist with specialty board certifications in neuropsychology and pediatric neuropsychology and a recognized expert in executive function disorders. His neuropsychology practice is located in Arlington Heights, Illinois where he works with children, adolescents, and adults with attention or concentration problems, memory difficulties, executive dysfunction, and learning disabilities both in clinical and school settings. Dr. Paul Beljan is the past president of the American Board of Pediatric Neuropsychology. He holds child and adult diplomat qualifications with the American Board of Pediatric Neuropsychology and the American Board of Professional Neuropsychology. Dr. Beljan completed two post-doctoral fellowship programs in pediatric psychology and pediatric neuropsychology, and has completed coursework for his post-doctoral master’s degree in psychopharmacology. John Mather, Ph.D., has worked as a neuropsychologist, school psychologist,educational administrator, and educational consultant for fifteen years. Dr. Mather has extensive experience with both pediatric and adult clinical populations. Dr. Mather is a respected expert in areas of dyslexia, dysgraphia, dyscalculia, executive function deficits, autism spectrum disorders, gifted intellect, traumatic brain injury, attachment disorders, and Tourette’s disorder. Kathleen Bree, PsyD completed a pre-doctoral internship and a post-doctoral fellowship in pediatric neuropsychology with Dr. Beljan. Dr. Bree’s professional focus includes evaluation of autism spectrum disorder, attention and executive functioning deficits, learning disorders, and gifted intelligence, with particular emphasis on the impact a child’s neuropsychological functioning has on the child’s behavior.