Positive Affect in Infant Siblings of Children Diagnosed with Autism Spectrum Disorder

Published August 13, 2014 in Journal of Abnormal Child Psychology

In a study published this week, Canadian infant sibs researchers examined very early symptoms in infants at risk for ASD. These are infants who have an older sibling affected with ASD and show a 1/5 recurrence rate. Meaning instead of 1/68, these kids have a 1/5 chance of having ASD. Because they were able to follow them over time, they assessed them carefully as they grew up. In this study, they were focused on smiling and affect. They showed that infants at risk for ASD that went on to get an ASD diagnosis didnt smile as much at 12-18 months of age. This is consistent with previous red flags of no warm joyful smiles but takes it a step farther and shows the duration and number of smiles is fewer in kids with ASD. Researchers are going to use this to improve the early signs and symptoms of autism and develop more targeted interventions for the early stages of ASD.

http://www.ncbi.nlm.nih.gov/pubmed/25117578

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