was first proposed by U.S. psychologists Sylvan S. Tomkins (1911 – 1991) and Carroll F. Izard (1923 – ) as a hypothesis where afferent information from facial muscleas are dependent on intrapsychic feeling states such as anger and joy.
FACIAL FEEDBACK HYPOTHESIS: “The facial feedback hypothesis explains that our facial expressions are dependend on the emotions and attitudes of the individual at the time of expression.”