Wednesday, December 26, 2007

Contagious Yawning

Via Gene Expression: Biology Letters reports "the disturbance of contagious yawning in individuals with autism spectrum disorder (ASD)."

Yawning video clips elicited more yawns in TD [typically developing] children than in children with ASD, but the frequency of yawns did not differ between groups when they observed control video clips. Moreover, TD children yawned more during or after the yawn video clips than the control video clips, but the type of video clips did not affect the amount of yawning in children with ASD. Current results suggest that contagious yawning is impaired in ASD, which may relate to their impairment in empathy. It supports the claim that contagious yawning is based on the capacity for empathy.


The news has already made it into the Wikipedia section on contagious yawning.

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