In 1972, psychologist Paul Eckman suggested that there are six basic emotions that are universal throughout human cultures: fear, disgust, anger, surprise, happiness, and sadness. In 1999, he expanded this list to include a number of other basic emotions including embarrassment, excitement, contempt, shame, pride, satisfaction, and amusement.
Emotions, often called feelings, include experiences such as love, hate, anger, trust, joy, panic, fear, and grief. Emotions are related to, but different from, mood. Emotions are specific reactions to a particular event that are usually of fairly short duration. Mood is a more general feeling such as happiness, sadness, frustration, contentment, or anxiety that lasts for a longer time.