Babies Read Each Other's Cues (image) Brigham Young University Share Print E-Mail 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. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.