Response to Joint Attention in Toddlers at Risk for Autism Spectrum Disorder: A Prospective Study |
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| Authors: | Michelle Sullivan Julianna Finelli Alison Marvin Elizabeth Garrett-Mayer Margaret Bauman Rebecca Landa |
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| Institution: | (1) Institute on Disability/UCED, University of New Hampshire, Durham, NH, USA;(2) Center for Autism and Related Disorders, Kennedy Krieger Institute, Baltimore, MD, USA;(3) Department of Oncology and Biostatistics, Sidney Kimmel Cancer Center and Bloomberg School of Public Health, Johns Hopkins School of Medicine, Baltimore, MD, USA;(4) Departments of Pediatrics and Neurology, Massachusetts General Hospital and Harvard University Medical School, Boston, MA, USA;(5) Department of Psychiatry, Center for Autism and Related Disorders, Kennedy Krieger Institute, Johns Hopkins School of Medicine, Baltimore, MD 21211, USA |
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| Abstract: | Response to joint attention (RJA) is impaired in preschoolers with autism spectrum disorder (ASD) and is pivotal to social
and communication development. Response to joint attention was examined at 14 and 24 months in 51 children at high risk for
autism (siblings of children with autism). Outcome groups at age 3 years included ASD (n = 16), broader autism phenotype (n = 8), and non-broader autism phenotype (n = 27). The ASD group made minimal improvement in RJA between 14 and 24 months, but stability of RJA across tasks increased
for all three groups. Significantly, lower RJA was observed for the ASD group at 24 months. Response to joint attention performance
at 14 months predicted ASD outcome. Response to joint attention is an important screening and early intervention target. |
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| Keywords: | Autism Joint attention Longitudinal Phenotype Siblings Social communication |
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