Contact: Joe Hadfield
Brigham Young University
Caption: BYU research shows that babies can understand each others emotional signals at five months of age. These baby boys are cousins -- the one on the left is four months old and the one on the right is five months.
Credit: Jaren Wilkey/BYU
Usage Restrictions: Available for use in news coverage about the study.
Related news release: Babies can read each other's signals