- Behavior/Humans
- By Laura Sinpetru
- August 21st, 2015
Study: Yawning Is Contagious, Except for Psychopaths
Psychopathic traits make people immune to contagious yawning
- Science Blog
- By Cristina Macari
- November 16th, 2012
Yawning Contagion in Bonobos Depends on How Closely Related They Are
Scientists say yawning is an unconscious way of communication