The Cannon-Bard theory of emotion is a physiological explanation of emotion that was developed by Walter Cannon and Philip Bard in the 1920s. The Cannon-Bard theory states that humans simultaneously feel emotions and experience physiological reactions such as trembling, sweating, and muscle tension. Due to the Cannon-Bard theory of emotion, people respond to a stimulus and an experience associated with an emotion in that moment (Cherry, b, nd). For example, when a person sees a snake, he becomes afraid and therefore begins to