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SYNGAP1‐ID is a neurodevelopmental disorder caused by a mutation of the SYNGAP1 gene. Characterized by moderate to severe developmental delay, it is associated with several physical and behavioral issues as well as additional diagnoses, including autism. However, it is not known whether social cognitive differences seen in SYNGAP1‐ID are similar to those previously identified in idiopathic or other forms of autism. This study therefore investigated visual social attention in SYNGAP1‐ID. Eye movements were recorded across three passive viewing tasks (face scanning, pop‐out, and social preference) of differing social complexity in 24 individuals with SYNGAP1‐ID and 12 typically developing controls. We found that SYNGAP1‐ID participants looked at faces less than the controls, and when they did look at faces, they had less time looking at and fewer fixations to the eyes. For the pop‐out task, where …