A new study suggests that passively observing strangers engage in affectionate social interactions triggers a physiological ...

Emotions are related to mood, personality and motivation, and they cause measurable physiological and psychological changes. The study of emotions and feelings is important because they are at the ...

A stressor is any event, situation, or external stimulus that causes a stress response in the body. Common types of stressors include financial, social, and occupational stressors, or those due to ...