Pregnant women with a history of bipolar disorder have a difficult time recognizing specific emotions in facial expressions, a new study reveals.
The human ability to recognize the facial expressions of dogs is acquired through age and experience and is not an evolutionarily selected trait.
Looking at a person's facial expression may not be the best way to detect their internal emotional feelings.
For children, emotional facial expressions could reveal whether they had a good night's sleep. Researchers found emotional expressivity following sleep restrictions could also forecast later life social problems.