
Bonobos Catch Yawns from Friends
For bonobos, yawning is contagious, but only between friends.
Yawns spread more easily between family and close friends, and from high-status monkeys to those lower on the totem pole, according to a study published online in the journal PLoS ONE. This pattern of social yawning mimics one found in humans and suggests infectious yawning is a byproduct of empathy, which coordinates emotions in a group.
&quot;It underlines that the mechanism of yawn contagion in the two species is the same,&quot; said study co-author Elisabetta Palagi, a primate researcher at the University of Pisa in Italy. &quot;One of the possible functions of yawn contagion is to synchronize individuals of a social group. In humans, yawn contagion is extremely important but just between people who share strong bonds.&quot;
