Emotions are a result of the physiological changes rather than their cause. Human beings have got different reactions to different events that they experience in their lives. The autonomic nervous system in the human body comes up with these responses according to what is stimulated in the body by the external environment (Brown, 2010).
It is these resultant reactions that generate the various emotions that humans experience such as anger, happiness, sadness and excitement. These responses elicited by the emotions contribute to the survival and reproduction of the human being in the environment he is in.
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