Greg Wallace

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Greg Wallace

Associate Professor



Email: Greg Wallace
Office Phone: (202) 994-8285
2115 G Street NW Washington DC 20052

Greg Wallace, PhD, is an Associate Professor at The George Washington University. His research focuses on neuropsychological and structural brain development in autism spectrum disorder and other neurodevelopmental disorders across the lifespan and their impacts on real-world outcomes. For example, he has recently examined executive functioning profiles and their relationships to academic achievement in children and adaptive functioning in both children and young adults with autism spectrum disorder. He is also particularly interested in eating-related behaviors and their cognitive and neural correlates in typical and atypical (e.g., autism spectrum disorder) development. Dr. Wallace has published extensively and presented his work widely on these and related topics.

- Editorial Board Member, Journal of Autism and Developmental Disorders
- Editorial Board Member, American Journal on Intellectual and Developmental Disabilities
- Editorial Board Member, Research in Autism Spectrum Disorders

- Editorial Board Member, Autism
- Member, International Society for Autism Researchers (INSAR)

- Autism

- Intellectual and Developmental Disabilities

- Neuropsychology

-Brain Development


Dr. Wallace conducts several lines of work examining patient-centered, real-world outcomes and their links to behavior, cognition, and brain across the lifespan in autistic people and people with intellectual and other developmental disabilities. 

Currently, Dr. Wallace and his lab are investigating:

- Mental and physical health outcomes among autistic adults, including those occurring in middle and older adulthood

- Associations of sex assigned at birth, gender, and sexual identity with brain structure and function, behavior, and health among autistic people

- Cognitive predictors of vocational and real-world outcomes among young adults with Down syndrome

- Form and function of repetitive behaviors as described by autistic youth and their families

- How autistic people compensate for challenges they experience in their daily lives 
- Eating behaviors and their cognitive and health-related correlates among autistic people


Dr. Wallace is an investigator on the following NIH-funded grants (each with an accompanying NIH Reporter link):

- R01MH100028 (

- R21HD106164 (

- R21MH129777 (

- P50HD111142 (

- R01MH133838 (


SLHS 2101: Research Methods (Undergraduate level)

SLHS 3133/PSYC 3133: Autism (Undergraduate level)
SLHS 6284: Autism (Graduate level)

Dr. Wallace has published more than 140 peer-reviewed papers.  The following is a sampling of recent papers.  For more comprehensive lists of his publications, please see his Google Scholar ( and ORCID ( websites. 

Lee, N. R., McQuaid, G. A., Grosman, H. A., Jayaram, S., & Wallace, G. L. (in press). Vocational outcomes in ASD: An examination of work readiness skills as well as barriers and facilitators to employment identified by autistic adults.  Journal of Autism and Developmental Disorders. doi: 10.1007/s10803-022-05804-8


Charlton, R. A., McQuaid, G. A., Bishop, L., Lee, N. R., & Wallace, G. L. (2023). Predictors of sleep quality for autistic people across adulthood. Autism Research, 16, 757-771. doi: 10.1002/aur.2891


Klein, C. B., McQuaid, G. A., Charlton, R. A., Klinger, L. G., & Wallace, G. L. (2023). Self-reported cognitive decline among middle and older age autistic adults.  Autism Research, 16, 605-616. doi: 10.1002/aur.2877

McQuaid, G. A., Gendy, J., Lee, N. R., & Wallace, G. L. (2023). Sexual minority identities in autistic adults: Diversity and associations with mental health symptoms and subjective quality of life.  Autism in Adulthood, 5, 139-153. doi: 10.1089/aut.2021.0088


Geurts, H. M., McQuaid, G. A., Begeer, S., & Wallace, G. L. (2022). Self-reported parkinsonism features in older autistic adults: A descriptive study.  Autism, 26, 217-229. doi: 10.1177/13623613211020183.

Ph.D., Psychology, King's College London, United Kingdom; 2006