Doctor Profile

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Christopher J. Nicholls

Clinical Psychologist / Neuropsychologist

Christopher J. Nicholls, Ph.D.


Dr. Nicholls is a Clinical Psychologist with over 35 years of experience working in a variety of medical centers and teaching hospitals, and now in private practice. He is a diplomate of the American Board of Professional Psychology (Clinical) as well as the American Board of Pediatric Neuropsychology, and he is a Fellow of the National Academy of Neuropsychology, the American Academy of Clinical Psychology and the American Academy of Pediatric Neuropsychology. Dr. Nicholls' practice is informed by his study of the emerging field of neuroscience, which allows him to understand his patients from a biopsychosocial perspective. He sees each person as unique, and as striving to live to their potential given their personal strengths, history, and relationships. 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.


Doctor of Philosophy, University of Virginia
Clinical Psychology
Master of Arts, University of Virginia
Clinical Psychology
Bachelor of Arts, University of Virginia


American Board of Professional Psychology (Clinical)
Certificate #6500
American Board of Pediatric Neuropsychology
Certificate #2055
4/25/85 - Present
State of Arizona
Board of Psychologist Examiners
License Certificate #1139
5/23/81 - 9/30/86
State of Ohio
State Board of Psychology
License #3085


National Academy of Neuropsychology
Aaron Canter Award for Distinguished Contributions to Professional Psychology
American Academy of Clinical Psychology
Distinguished Service Award Arizona Psychological Association
American Academy of Pediatric Neuropsychology

|Community Service/Offices

2016 - 2019
American Psychological Association
Council of Representatives
Arizona Delegate
2001 - 2016
Arizona Psychological Association
Governing Council
Past President
President Elect
2006 - 2008
2008 - 2009
Chair of the Strategic Planning Committee
2001 - 2008
Ethics Committee (2001 - 2004 Chair)
2009 - 2011
American Psychological Association
Committee of State Leaders, Member-At-Large
Chair, Orientation Subcommittee
2009 - 2012
Arizona Neuropsychological Society
Member At Large
President and Co-Founder
2000 - 2005
Brain Injury Association of Arizona
Board of Directors
2003 – 2004
Arizona Board of Psychologist Examiners
Complaint Consultant
1998 - 1999
Arizona Board of Psychologist Examiners
Licensure Oral Examiner
1987 - 1999
American Lung Association of Arizona
Board of Directors
1996 - 1997
1993 - 1995
Vice President
1992 - 1993
1990 - 1992
1995 - 1999
Phoenix Children's Hospital Psychiatry Committee
1997 - 1999
Los Niños Hospital
Professional Services Committee
1990 - 1995
City of Phoenix Fire Department
Community Advisory Panel
Juvenile Fire Setter Program
1992 - 1994
Hospice of the Valley
Professional Advisory Board
Phoenix, Arizona
1983 - 1985
Miami Valley (Ohio) Psychological Association


1988 - present
Arizona State University
Department of Psychology
Adjunct Faculty
1993 - 2001
Adjunct Professor
1988 - 1992
Adjunct Associate Professor
1999 - 2005
Argosy University, formerly the Arizona School of Professional Psychology
Phoenix Campus
Clinical Faculty
2000 - 2001
The Union Institute
The Graduate College
Adjunct Professor
1985 - 1988
Wright State University
School of Medicine (Pediatrics)
Clinical Assistant Professor
1982 - 1985
Wright State University
School of Professional Psychology
Clinical Assistant Professor

|Clinical Experience

1987 - Present
Clinical Neuropsychologist
Private Practice, Scottsdale, Arizona
1988 - 2007
Consulting Psychologist,
Disability Determination Services Administration,
Department of Economic Security,
State of Arizona
1990 - 2004
Consulting Psychologist
Tonto Basin School
Punkin Center, Arizona
1988 - 2002
Chief Psychologist,
Arizona Burn Center
Maricopa Medical Center,
Phoenix, Arizona
1988 - 1998
Consulting Psychologist,
Department of Pediatrics
Maricopa Medical Center,
Phoenix, Arizona
1989 - 1998
Consulting Psychologist,
Administration for Children, Youth and Families;
Department of Economic Security,
State of Arizona
1993 - 1995
Consulting Psychologist,
Phoenix Fire Department
Phoenix, Arizona
1985 - 1987
Pediatric Psychologist
Phoenix Children's Hospital
Phoenix, Arizona
1979 - 1985
Pediatric/Perinatal Psychologist
Children's Medical Center
Dayton, Ohio
1978 - 1979
Pediatric Psychology Trainee
Department of Pediatrics
Children's Rehabilitation Center
University of Virginia Hospital
Charlottesville, Virginia
1978 - 1979
Consultant to Morning Sun, Inc.
(Residential treatment facility for juvenile offenders)
1977 - 1978
Family Counselor.
Family Counseling Program
University of Virginia
1975 - 1977
Psychology Internship/Residency
University of Virginia Medical Center
Charlottesville, Virginia


  • Nicholls, C.J. & Yang, S. Contributor to Nancy Mather and Lynne E. Jaffe (Eds.) (2016) Woodcock-Johnson IV: Reports, Recommendations and Strategies, Hoboken, NJ: John Wiley & Sons.
  • DenBoer, J.W., Nicholls, C.N., Corte, C. & Chestnut, K. (2014). National Institutes of Health Toolbox Cognition Battery: Review. Archives of Clinical Neuropsychology, Vol. 27, No. 7, pp. 692-694.
  • Nicholls, C.J. contributor to Karen Postal & Kira Armstrong (Eds.) (2013) Feedback that Sticks: The Art of Effective Communicating Neuropsychological Assessment Results. New York: Oxford University Press.
  • Nicholls, C.J. (2014) Book review: Vicki Anderson & Miriam H. Beauchamp (Eds.) Developmental Social Neuroscience and Childhood Brain Insult. New York: Guilford Press., Child Neuropsychology 2012, 20:1-2 pp 127-128 (electronically published iFirst: 21 November, 2012).
  • Nicholls, C.J. (2010) Book review: Maria Mody and Elaine R. Silliman (Eds.) Brain, Behavior and Learning in Language and Reading Disorders, Guilford Press: New York, Published in Archives of Clinical Neuropsychology, 2010: Vol. 25, No. 1, pp 78-79.
  • Nicholls, C.J. (2004). “Lessons learned in living with an Attention-Deficit/Hyperactivity Disorder” Journal of Child Neurology, Vol. 19., Number 10.
  • Nicholls, C.J. (2001) “Ethical Issues in Electronic Communication” The Arizona Psychologist Volume 21, Number 2, pp. 10 – 11.
  • Nicholls, C.J. (1999). “What to expect: Entering adulthood with Attention Deficit/Hyperactivity Disorder.” In Clare B. Jones, H. Russell Searight, and Magda A. Urban (Eds.) Parent Articles About ADHD. San Antonio: Communication Skill Builders.
  • Nicholls, C.J., & Melmed, R.D. (1994) Succeeding with Difficult Children, Scottsdale: Thisisit, Inc.
  • Nicholls, C.J., Stillwell, P.C. & Yeamans, N. (1988, April). “Paradoxical Vocal Cord Adduction” Poster Session at the Florida Conference on Child Health Psychology, Gainesville, Florida. (Published in Stephen R. Boggs and Christina M. Rodriguez (Eds.) Advances in Child Health Psychology – Abstracts Gainesville, Fla: Clinical & Health Psychology Publishing, 1991)
  • Nicholls, C.J. (1981). Pediatric Psychology: Function of Team Medical Treatment of Ill Children,” Behavior Today, 12:17, 6-7.

|National/International Level Conference Presentations

  • Nicholls, C.J. (2016, October) “The Psychologist’s role in the evaluation and treatment of Attention-Deficit/Hyperactivity Disorder (ADHD)” Keynote address to the XXIV Congreso Mexicano de Psicologia. Sociedad Mexicana de Psicologia, A.C., Mexico City, Mexico.
  • Nicholls, C.J. & Ross, E.K. & Schneider, W.J. (2016, April). The neuropsychological profiles of twins discordant for Sotos Syndrome: A case study. Poster presented to the American Academy of Pediatric Neuropsychology Conference, Las Vegas NV
  • Nierenberg, B & Nicholls, C.J. (2006, March) “Pediatric Issues in Rehabilitation” Presentation to the 8th Annual Conference on Rehabilitation Psychology – 2006, sponsored by the American Board of Rehabilitation Psychology and the Division of Rehabilitation Psychology of the American Psychological Association, Reno NV.
  • Nicholls, C.J. (2001, October) “The Link Between Attention Deficit Disorders and Learning Disabilities in Mathematics” Presented to both the CH.A.D.D. Annual Convention in Anaheim CA, as well as to the Learning Disabilities Association of Arizona, in Mesa, AZ.
  • Goodwin, T.M.; Randall, H.; Perr, K.; Menard, M.K.; Bauer, C.; Shangold, G.; Lane, R.; Creasy, G.; and the Antosiban Study Group (participant researcher) (1998, May). A Report on Infant Outcomes At 6 and 12 Months after The Use of Antosiban In The Management Of Preterm Labor. Poster session presented at the 46th Annual Meeting of the American College of Obstetricians and Gynecologists, New Orleans, LA.
  • Nicholls, C.J., Johnsen, L.M., and Schiller, W.R. (1994, June) “Methadone for Pain Control in Children” presented to the 9th congress of the International Society for Burn Injuries, Paris, France.
  • Nicholls, C.J. (1992, March). “Keeping the family healthy when the baby isn’t.” Invited address to the Parent Care National Convention, New Orleans, LA.
  • Nicholls, C.J. (1998, May). “Patterns of Familial Adjustment to Cerebral Palsy and Other Handicapping Conditions”, invited address to the “Cerebral Palsy: A Multidisciplinary Approach” conference, sponsored by the American Academy for Cerebral Palsy and Developmental Medicine, Scottsdale, Arizona.
  • Nicholls, C.J. (1990, May). “A study of the relative effectiveness of pain medications in burned children.” Invited address to the Society of Pediatric Psychology First California/Arizona Regional Conference, San Diego, CA.
  • Peterson, F.L., Peterson, K.J., Redman, E.S., Nicholls, C.J., and Blasenak, B. (1986, August). “Transition to Parenthood: A pilot project of the “Expectant Couples Enrichment Class”, presentation at the 94th Annual Convention of the American Psychological Association, Washington, D.C.
  • Nicholls, C.J. and Tavormina, J.B. (1978, August). “Use of the WISC-R in Diagnosing Learning Disabilities,” paper presented at the 86th annual convention of the American Psychological Association, Toronto, Canada.

|State Level Conference Presentations

  • Nicholls, C.J. (2015, September). “The diagnosis of ADHD in Adults.” Presented to the Arizona Neuropsychological Society, Flagstaff Medical Center, Flagstaff AZ.
  • Nicholls, C.J. (2012, October). “What’s new in ADHD, Dyslexia, and NVLD?” Presented to the 2012 Annual Convention of the Arizona Psychological Association, Tucson AZ.
  • Nicholls, C.J. (2012, January). “Understanding Child Mental and Psychological Disorders: The Case of Neurodevelopmental Disorders” Presented to the Yavapai County Dependency Attorney Training conference, Prescott, AZ.
  • Nicholls, C.J. (2009, May) “Dyslexia in Adulthood” Presented to the Arizona Neuropsychological Society, Tempe, AZ.
  • Nicholls, C.J. (2008, June). “Ethical Issues in Psychological Assessment,” a continuing education program presented under the auspices of the Arizona Psychological Association, in Prescott, AZ.
  • Logerquist, S. & Nicholls, C.J. (2005, October). “Lifespan Assessment and Treatment of Individuals with Asperger’s Syndrome.” Presentation to the Arizona Psychological Association’s annual conference, Scottsdale, AZ.
  • Nicholls, C.J., Stewart, J., and Cohen, L (2004, April). Presented “Ethics, HIPAA and All That Jazz” Arizona Psychological Association continuing education conference, 1) Prescott AZ and 2) Phoenix, AZ.
  • Goldberg, A., Lovejoy, G., and Nicholls, C. (2002, October). “Ethical Issues in the Practice of Psychology”, Presented to the 2002 Arizona Psychological Association Annual Convention, Tucson, AZ.
  • Nicholls, C.J. & Nicholls, L.F. (1994, April). “Been there, done that – family adaptation to a premature birth” presented to the Hocus Pocus: Neonatal Focus conference, Phoenix, AZ.
  • Nicholls, C.J., Bushong, J., Parks, B. and Engel, B. (1993, October). “What school psychologists need to know about juvenile fire setters.” Invited address to the 1993 Annual convention of the Arizona Association of School Psychologists, Phoenix, AZ.
  • Nicholls, C.J. (1987, October). “The Team Concept in a Hospital—Based Practice”, Presentation to the 1987 Arizona Psychological Association Conference, Scottsdale, AZ.
  • Nicholls, C.J. (1982, April). “Emotional Stress During Pregnancy: “It’s Sources, Effects, and Some Suggestions on Management”, invited address to the Second Annual Perinatal Symposium, Dayton, OH.

|Local Level Presentations

  • Nicholls, C.J. & Ingram, A.M. (2016, September). “A broad overview of neuropsychology.” Arizona Training Consortium, Phoenix AZ.
  • Nicholls, C.J. & Karabatsos, S.C. (2014, January). “What do you need to know about concussions and mild traumatic brain injury?” Presented to the Children’s Services Network meeting, Scottsdale AZ.
  • Nicholls, C.J. (2014, January). “Do good! Don’t do bad! Ethical issues in assessment.” Presented to the Assessment and Behavioral Medicine Section, Carl T. Hayden Veteran’s Affairs Medical Center, Phoenix, AZ.
  • Nicholls, C.J. (2012, November). “A framework for family coping” Presented to the National Stuttering Association Family Fun Day, Arizona State University, Tempe, AZ.
  • Nicholls, C.J. (2012, February). “The many faces of social skills, and how they can be taught” Presented to the Scottsdale Parent Advisory Council, Scottsdale, AZ.
  • Nicholls, C.J. (2012, January & February). “Executive Dysfunction in Developmental Psychopathology” Presented to the Greater Phoenix Chapter, Arizona Society of Child & Adolescent Psychiatry, Phoenix, AZ January 20, 2011, and to the Arizona Neuropsychology Society, Phoenix, AZ.
  • Flynn, S. & Nicholls, C.J. (2006, November and 2007, March & September). “The Ethics of Electronic Communications” presented to the Southern Arizona Psychological Association, Tucson AZ, the East Valley Psychological Association, and the Scottsdale Psychological Society.
  • Nicholls, C.J. (2005, April). “Developmental Apathy Syndrome” Presented to the Arizona Pediatric Neuropsychology Interest Group, Phoenix AZ.
  • Nicholls, C.J. (2003, January and February). “Development, Neuropsychology, and the Juvenile Death Penalty” Presented to: The Southern Arizona Psychological Association and Pima County Bar Association joint conference, University of Arizona Law School, Tucson, AZ., and the Maricopa Bar Association conference, Phoenix, AZ.
  • Nicholls, C.J. (2002, August). “Mental Health Ethics and the new APA Code of Ethics for Psychologists” Presented to the Phoenix Area Indian Health Service, Mental Health and Social Services Conference, Phoenix, AZ.
  • Nicholls, C.J. (2000, February). “What’s new in the psychometric assessment of ADHD?” presented to the AD/HD In the New Millennium conference, Arizona State University West, Phoenix, AZ
  • Nicholls, C.J. (1999, May). “The short attention span update on ADHD” Presentation to the Scottsdale Psychological Society, Scottsdale, AZ.
  • Nicholls, C.J. and Barton J.L. (1998, February). “LD and ADHD in adults: An update” Arizona Psychological Association continuing education conference. Arizona State University, Tempe, AZ.
  • Nicholls, C.J. (1997, May). “Learning Disorders” presented to the “In the Best Interests” seminar sponsored by the Maricopa Juvenile Court, the ASU College of Law, and the State Bar Juvenile Law Section, Arizona State University College of Law, Tempe, AZ.
  • Nicholls, C.J. (1996, February). “Attention Deficit Disorders in Adulthood” workshop presented for the Arizona Psychological Association, Phoenix, AZ.
  • Nicholls, C.J. (1995, February). “The psychologist’s role in evaluation and treating ADHD” presented to the Attention Deficit-Hyperactivity Disorder Strategies for Success conference, Phoenix, AZ.
  • Nicholls, C.J. (1991, March). “Coping with the stress of diabetes.” Invited address to the Fifth annual conference of the American Diabetes Association of Arizona Affiliate Inc, Prescott, AZ.
  • Nicholls, C.J. (1991, January). “Assessment and treatment modalities for children’s pain.” Invited address to the Complementary Medicine Association annual conference in Tucson, AZ.
  • Nicholls, C.J. (1986, June). “Psychological Aspects of the Pediatric Orthopedic Patient”, invited address to the conference “Orthopedics: Innovative Concepts for the 80’s”, Embassy Suites Camelback, Phoenix, AZ.
  • Nicholls, C.J. (1985, November). “Taking the Terminally Ill Child Home”, invited address to the “Hospital to Home: Easing the Transition for Chronically Ill Children” workshop, Phoenix, AZ.
  • Nicholls, C.J. (1985, October). “Psychological Aspects of Chronic Illness”, Developmental Grand Rounds, Phoenix Children’s Hospital, Phoenix AZ.
  • Lemming, C., Nicholls, C.J., and Predmore, B. (1981, July). “Caring About the Critically Ill and Dying Child”, Grand Rounds presentation to the Wright State University Department of Pediatrics, Children’s Medical Center, Dayton, Ohio.
  • Nicholls, C.J (1979). “Behavioral Approaches to Feeding Problems” presentation at the Feeding Techniques for the Handicapped Child Conference, Children’s Rehabilitation Center, Charlottesville, VA.
  • Nicholls, C.J. (1978). “Promoting Psychological Adjustment to the Milwaukee Brace”, presentation to the “Everything You Always Wanted to Know About Scoliosis but Were Afraid to Ask” Conference, Children Rehabilitation Center, Charlottesville, VA.

|Professional Society Membership

  • American Academy of Pediatric Neuropsychology
  • American Academy of Clinical Psychology
  • American Psychological Association
  • Arizona Psychological Association
  • International Neuropsychological Association
  • National Academy of Neuropsychology
  • Scottsdale Psychological Society