Expert Neurodiversity-Affirming Evaluations
Who does the testing?
Meet our staff psychologists who specialize in helping you answer diagnostic questions with research-backed tests.
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Founder & Supervisor
Certified Neurodiversity-Affirming Assessment Provider
Dr. Gideon is the owner and founder of Grey Matter Psychological Assessment, where her passion lies in providing comprehensive evaluations for ADHD, autism, and learning disorders. She is deeply committed to supporting neurodivergent individuals and ensuring they receive the personalized care and accommodations they need to thrive.
While Dr. Gideon has also received extensive training in forensic assessment, her primary focus at Grey Matter is on conducting thorough, neurodiversity-affirming evaluations. She works closely with children, adolescents, and adults to identify their unique strengths and challenges, and to develop tailored intervention plans that empower them to reach their full potential.
In addition to ADHD and autism assessments, Dr. Gideon offers a range of diagnostic testing services, including evaluations for learning disabilities, processing disorders, and other neurocognitive conditions. Her goal is to provide clients with a clear understanding of their needs and connect them with the resources and support necessary for academic, personal, and professional success.
As the supervisor of all assessment staff at Grey Matter, Dr. Gideon ensures that each evaluation is conducted with the utmost care, empathy, and attention to detail. She is dedicated to staying up-to-date on the latest research and best practices in the field of neurodiversity, and she is committed to creating a safe, inclusive environment for all of her clients.
Dr. Gideon provides:
Mini-ADHD Assessments
ADHD Assessments
Autism Assessments
Educational Evaluations
Testing for Exam Accommodations
Diagnostic Testing
Forensic Evaluations
Fitness for Duty Evaluations
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Forensic Neuropsychologist
Dr. Johnson is the supervising psychologist at Grey Matter Psychological Assessment, where she oversees all aspects of the practice's comprehensive testing and assessment services. With years of experience in both clinical and forensic settings, Dr. Johnson is deeply committed to providing her clients with thorough, insightful evaluations that address a wide range of cognitive, neurological, and mental health concerns.
As part of her extensive forensic training, Dr. Johnson worked extensively at the Twin Towers Correctional Facility in downtown Los Angeles, the largest mental health facility of its kind in the world. There, she gained invaluable experience in assessing and treating some of the most complex and challenging cases, honing her skills in areas such as competency to stand trial, criminal responsibility, and fitness for duty evaluations.
In addition to her forensic expertise, Dr. Johnson is also highly skilled in the field of neuropsychological assessment. She specializes in evaluating and diagnosing conditions like dementia, traumatic brain injury (TBI), and other cognitive impairments, helping clients and their families better understand the impact of these conditions and develop effective treatment and management strategies.
Whether conducting mini-ADHD assessments, comprehensive diagnostic testing, or in-depth neuropsychological evaluations, Dr. Johnson approaches each client with empathy, warmth, and a deep commitment to helping them find the answers and support they need. She works closely with a team of skilled assessment professionals to ensure that every evaluation is thorough, personalized, and tailored to the unique needs of the individual.
As the supervising psychologist at Grey Matter, Dr. Johnson plays a critical role in maintaining the highest standards of clinical excellence and ensuring that each client receives the utmost care and attention. Her expertise, coupled with her genuine passion for helping others, makes her an invaluable asset to the Grey Matter team and the clients they serve.
Dr. Johnson provides:
Mini-ADHD Assessments
ADHD Assessments
Diagnostic Testing
Neuropsychological Testing (Dementia, TBIs, and Cognitive Testing)
Forensic Evaluations
Fitness for Duty Evaluations
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