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Direct linkHelt, Molly S.; Eigsti, Inge-Marie; Snyder, Peter J.; Fein, Deborah A. – Child Development, 2010
The authors tested susceptibility to contagious yawning in 120 children, 1-6 years, to identify the time course of its emergence during development. Results indicated a substantial increase in the frequency of contagious yawning at 4 years. In a second study, the authors examined contagious yawning in 28 children with autism spectrum disorders…
Descriptors: Control Groups, Age, Autism, Child Development
