Len Abbeduto, Ph.D. - IDDRC Investigator

Leonard Abbeduto, Ph.D.

Director, UC Davis MIND Institute and Tsakopoulos-Vismara Endowed Chair, Department of Psychiatry and Behavioral Sciences, School of Medicine
UC Davis MIND Institute
2825 50th Street, Room 2222
Sacramento, CA 95817 

Phone: 916-703-0234 / Fax:  916-703-0244
E-mail: ljabbeduto@ucdavis.edu 

Areas of Interest

Fragile X syndrome, Autism, Down syndrome, Language Development, Families


Leonard Abbeduto is the Principal Investigator and Director of the IDDRC and Director of the UC Davis MIND Institute. Dr. Abbeduto’s research is focused broadly on the development of language across the lifespan in individuals with neurodevelopmental disorders, such as fragile X syndrome, Down syndrome, and autism.  He also is interested in the interplay between language development and comorbid conditions, such as anxiety, and in the family context for language development. Current projects are focused on understanding variation in language outcomes with and between various neurodevelopmental disorders, the measurement of treatment effects in clinical trials, the efficacy of parent-implemented language interventions, and the use of distance technology in behavioral treatment.

Current IDDRC Projects

  • Language development in fragile X syndrome, NICHD/NIH, R01 HD204356
  • Expressive language sampling as an outcome measure, NICHD/NIH, R01 HD074346
  • Social-affective bases of word learning in fragile X syndrome and autism, NICHD/NIH, R01 HD054764
  • Cognitive precursors of language impairment in Down syndrome, NICHD/NIH, R01 HD055345

Recent Representative Publications

Berry-Kravis, E., Doll, E.D., Sterling, A., Kover, S.T., Schroeder, S.M., Mathur, S., & Abbeduto, L. (2013). Development of an expressive language sampling procedure in fragile X syndrome: A pilot study. Journal of Developmental and Behavioral Pediatrics, 34, 245-251.

Kover, S.T., McDuffie, A., Hagerman, R.J., & Abbeduto, L. (2013). Receptive vocabulary in boys with autism spectrum disorder: Cross-sectional developmental trajectories. Journal of Autism and Developmental Disorders, 43, 2696-2709.

McDuffie, A., Kover, S.T., Hagerman, R.J., & Abbeduto, L. (2013). Investigating word learning in fragile X syndrome: A fast-mapping study. Journal of Autism and Developmental Disorders, 43, 1676-1691.

McDuffie, A., Machalicek, W., Oakes, A., Haebig, E., Ellis Weismer, S., & Abbeduto, L (2013). Distance video-teleconferencing in early intervention: Pilot study of a naturalistic parent-implemented language intervention. Topics in Early Childhood Special Education, 33, 172-185.

Pierpont, E.I., Richmond, E.K., Abbeduto, L., Kover, S.T., & Brown, W.T. (2011). Contributions of phonological and verbal working memory to language development in adolescents with fragile X syndrome. Journal of Neurodevelopmental Disorders, 3, 335-347.