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The James-Lange theory refers to a hypothesis on the origin and nature of emotions developed independently by two 19th-century scholars, William James and Carl Lange. The theory states that within human beings, as a response to experiences in the world, the autonomic nervous system creates physiological events such as muscular tension, a rise in heart rate, perspiration, and dryness of the mouth. Emotions, then, are feelings which come about as a result of these physiological changes, rather than being their cause. James and Lange arrived at the theory independently. Lange specifically stated that vasomotor changes are emotions. (Ex. A person rationalizes that because they are crying, they must be sad.)
James elucidated his concept as:
- My theory ... is that the bodily changes follow directly the perception of the exciting fact, and that our feeling of the same changes as they occur is the emotion. Common sense says, we lose our fortune, are sorry and weep; we meet a bear, are frightened and run; we are insulted by a rival, are angry and strike. The hypothesis here to be defended says that this order of sequence is incorrect ... and that the more rational statement is that we feel sorry because we cry, angry because we strike, afraid because we tremble ... Without the bodily states following on the perception, the latter would be purely cognitive in form, pale, colorless, destitute of emotional warmth. We might then see the bear, and judge it best to run, receive the insult and deem it right to strike, but we should not actually feel afraid or angry.
The notion of causality is a difficult one. The theory has been largely disfavored in modern times. Some evidence to support it, however, may come from the fact that sufferers of various psychological challenges such as panic disorders often experience psychoemotional trauma after physiological responses arise in the body, responses which individuals are conditioned to associate with a particular emotional state but which can, via therapy, be dissociated.
This theory was challenged in the 1920s by psychologists such as Walter Cannon and Philip Bard, who theorized that physiological changes are caused by emotions (collectively known as the Cannon-Bard Theory of Emotion).
The third theory of emotion is called the Schachter & Singer's Two factor theory of emotion. This theory states that emotions are a direct result of an analysis of the surroundings.
- The viscera are largely unresponsive and react relatively slowly (i.e. - we 'feel' the emotion before the physiological changes have occurred.)
- Cutting nerves from the viscera has no effect on emotions in rats.
- Visceral responses are the same no matter what the reported emotion.
- Injecting adrenaline/epinephrine (as in released from the adrenal glands during "normal" emotional state) does not induce the feeling of an emotion only your moods.
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