Gregory Wallace

Gregory Wallace

Gregory Wallace

Assistant Professor of Speech, Language, and Hearing Sciences, GW Columbian College of Arts and Sciences


2115 G Street NW Washington DC 20052


Research Focus


Dr. Wallace's work focuses on structural brain development and neuropsychological functioning in autism spectrum disorder across the lifespan. Recent work has investigated executive functioning and its relationship to real-world outcomes (e.g., academic achievement and adaptive functioning) in children and adults with autism spectrum disorder.  Dr. Wallace is also interested in eating-related behaviors and their cognitive and neural correlates in typical and atypical (e.g., autism spectrum disorder) development.

  • Autism Spectrum Disorders
  • Neurodevelopmental Disorders
  • Neuropsychology
  • Brain Development


Dr. Wallace conducts several lines of work examining both brain (primarily using magnetic resonance imaging [MRI]) and behavioral development in autism spectrum disorders in collaboration with the Center for Autism Spectrum Disorders at Children's National Medical Center and with the Laboratory of Brain and Cognition at the NIMH.

We are Investigating:

  • Atypical structural brain development in adolescents and adults with autism spectrum disorders;
  • Neuropsychological functioning in children, adolescents and adults with autism spectrum disorders, including both strengths (e.g. savant skills) and difficulties (e.g. executive function)
  • Adult outcome in autism spectrum disorders
  • Selective ('picky') eating and its behavioral, cognitive, and neural correlates in typical and atypical (e.g., autism spectrum disorder) development

SPHR 2133: Autism (Undergraduate level)
SPHR 6210: Research in Communication Sciences and Disorders (Graduate level)
SPHR 6291: Autism (Graduate level)


Wallace, G. L., Budgett, J., & Charlton, R. (2016). Aging and autism spectrum disorder: Evidence from the broad autism phenotype.  Autism Research. in press.

Wallace, G. L., Yerys, B. E., Peng, C. S., Dlugi, E., Anthony, L., & Kenworthy, L. (2016). Assessment and treatment of executive function impairments in autism spectrum disorder: An update.  In R. M. Hodapp, & D. J. Fidler (Eds.), International Review of Research in Developmental Disabilities (pp. 85–122).  

Wallace, G. L., Kenworthy, L., Pugliese, C. E., Popal, H. S., White, E. I., Brodsky, E., & Martin, A. (2016). Real-world executive functions in adults with autism spectrum disorder: Profiles of impairment and associations with adaptive functioning and co-morbid anxiety and depression.  Journal of Autism and Developmental Disorders, 46, 1071-1083.

Kuschner, E. S., Eisenberg, I. W., Orionzi, B., Simmons, W. K., Kenworthy, L., Martin, A., & Wallace, G. L. (2015). A preliminary study of self-reported food selectivity in adolescents and young adults with autism spectrum disorder. Research in Autism Spectrum Disorders, 15-16, 53-59.

Wallace, G. L., Eisenberg, I. W., Robustelli, B., Dankner, N., Kenworthy, L., Giedd, J. N., & Martin, A. (2015). Longitudinal cortical development during adolescence and young adulthood in autism spectrum disorders: Increased cortical thinning but comparable surface area changes. Journal of the American Academy of Child and Adolescent Psychiatry, 54, 464-469.

Wallace, G. L., White, S., Robustelli, B., Sinclair, S., Hwang, S., Martin, A., & Blair, R. J. (2014). Cortical and subcortical abnormalities in youths with conduct disorder and elevated callous-unemotional traits. Journal of the American Academy of Child and Adolescent Psychiatry, 53, 456-465.

Anthony, L.G., Kenworthy, L., Yerys, B.E., Jankowski, K.F., James, J.D., Harms, M.B., Martin, A., & Wallace, G.L. (2013). Interests in high-functioning autism and more intense, interfering, and idiosyncratic than those in neurotypical development.  Development and Psychopathology, 25, 643-652.

Wallace, G.L., Robustelli, B., Dankner, N., Kenworthy, L., Giedd, J.N. & Martin, A. (2013). Increased gyrification but comparable surface area in adolescents with high functioning autism spectrum disorders. Brain, 136, 1956-1967.

Wallace, G.L., Shaw, P., Lee, N.R., Clasen, L.S., Raznahan, A., Lenroot, R.K., Martin, A., & Giedd, J.N. (2012). Distinct cortical correlates of autistic versus antisocial traits in a longitudinal sample of typically developing youth. Journal of Neuroscience, 32, 4856-4860.

Wallace, G.L., Case, L.K., Harms, M.B., Silvers, J.A., Kenworthy, L., & Martin, A. (2011). Diminished sensitivity to sad facial expressions in high functioning autism spectrum disorders is associated with symptomatology and adaptive functioning. Journal of Autism and Developmental Disorders, 41, 1475-1486.

Wallace, G.L., Dankner, N., Kenworthy, L., Giedd, J.N., & Martin, A. (2010). Age-related temporal and parietal cortical thinning in autism spectrum disorders. Brain, 133, 3745-3754.

Wallace, G.L., Silvers, J.A., Martin, A., & Kenworthy, L.E. (2009). Further evidence for inner speech deficits in autism spectrum disorders. Journal of Autism and Developmental Disorders, 39, 1735-1739.

Wallace, G.L., Happe, F., & Giedd, J.M. (2009). A case study of a multiply-talented savant with an autism spectrum disorder: Neuropsychological functioning and brain morphometry. Philosophical Transactions of the Royal Society B: Biological Sciences, 364, 1425-1432.

Ph.D., Psychology, Univeristy of London, 2006