The<unk>  is a psychological theory developed by psychologists Walter<unk>  and Philip<unk> , which suggests that people feel emotions first and then act upon them. These actions include changes in muscular tension, perspiration, etc. The theory was formulated following the introduction of the James-Lange theory of Emotion in the late 1800s, which alternately suggested that emotion is the result of one's perception of their reaction, or "bodily change."
The<unk>  sparked much controversy in cognitive circles due to its suggestion that there is no mechanism to emotion, and many theorists attempted to provide explanations of emotion that suggested a mechanism. One such theory was provided by Schachter & Singer's Two factor theory of emotion, in which they posited that emotion is the cognitive interpretation of a physiological response. For many, this remains the best formulation of emotion.
Cannon-Bard theory
James-Lange theory
Henderson-Hasselbalch equation
Parts-per notation
Weber–Fechner law
Starling equation
Hund's rule of maximum multiplicity
Kick chart