A four-part process that involves physiological arousal, subjective feelings, cognitive interpretation and behavioral expression -- all of which interact, rather than occuring in a linear sequence. Emotions help organisms deal with important events.

Ex. Mountain lion induces fear in the human, and so the human runs.

The permissible ways of displaying emotion in society.

Ex. "Men don't cry."

The idea that the left hemisphere of the brain deals with more positive emotions, while the right side of the brain deals with more negative emotions.

Ex. Left (Happy, joy, etc...)
Right (Anger, sadness, depression, etc...)

The proposal that an emotion-provoking stimulus produces a physical response that, in turn, produces an emotion.

Ex.  We feel sorry because we cry.

The empotional and physical reaction to a situation occur simultaneously.

Ex. Feeling love and then feeling one's heart racing, body heat increasing occurs at the same time.

A theory of emotion that states that emotion is largely due to the external, physical, situation one is placed in or due to internal physical factors.

Ex. Being placed in a ring of tigers will induce fear, overstimulation of the amygdala may induce aggression.

The theory of emotion that states that one appraises, or sizes up, a situation and then consciously chooses which emotion to feel regarding it.

Ex. "That guy is planning to fight me, so I'm going to have to feel brave in order to stand my ground."

The theory of emotion that asserts when a particular emotion is felt, then the opposite is subdued.

Ex. Feeling sadness subdues feeling happy.

High levels of arousal, and low levels of arousal, lead to a decline in performance.

Ex. Overstimulation may lead to freezing in place, while too low of a stimulation may lead to extreme boredom -- both that would impede doing work.

People who deliberately go out as to experience high levels of arousal.

Ex. Skydivers, mountain climbers.

The ability to discern one's own feelings and the feelings of others.

Ex. Knowing someone is sad due to their facial expression, or knowing why you are sad.

A polygraph is a test that hooks up itself to an individual's vitals, and other aspects of that person as to moderate heart rate and stress that the person may be feeling.

Ex. Hooking up a suspect to a lie-detector test. (Largely seen as inconclusive and not allowed in many courts of law).

All the processes involved in doing and maintaining an activity.

Ex. You drink for thirst drives you to drink.