No personal sDr. Nicholls is a Clinical Psychologist with over 40 years of experience working in a variety of medical centers and teaching hospitals, and now in private practice. He is a Fellow of the American Psychological Association and the National Academy of Neuropsychology. He is a diplomate of the American Board of Professional Psychology as well as the American Board of Pediatric Neuropsychology. Dr. Nicholls has served in multiple leadership roles including being the President of the Arizona Psychological Association and the representative of the State of Arizona to the American Psychological Association. Dr. Nicholls has written multiple articles, two books, and he has presented at the local, national and international level. Dr. Nicholls specializes in the evaluation and diagnosis of neurodevelopmental disorders including learning disabilities, Attention-Deficit/Hyperactivity Disorder, and Autism Spectrum conditions. Dr. Nicholls also specializes in personal injury and the impact of chronic health conditions and acute trauma/injury.tatement at this time