Opponent Process Theory

What is opponent-process theory?

In motivation research, opponent-process theory proposes that an emotional or physiological response recruits an opposing process. The initial response is often called the A-process; the opposing response is the B-process. Their balance helps determine the feeling during stimulation and the after-reaction when stimulation ends.

Research foundation

Solomon’s 1980 account, building on Richard Solomon and John Corbit’s 1974 paper, describes how repetition can reduce the initial affective response while strengthening or prolonging the opposing after-reaction. It uses this pattern to explain aspects of acquired motivation, including tolerance and withdrawal.

Opponent-process theory of emotion and addiction

In the addiction application, a drug’s initially pleasurable A-process can be followed by an unpleasant B-process. With repetition, the opposing after-reaction can become stronger or last longer. The model helps describe why avoiding that negative state can become a reason for continued use; it is not a complete account of addiction.

Illustrative example

An initially unpleasant activity could be followed by a pleasant after-reaction that becomes more prominent with experience. The theory concerns this changing time course, not a rule that every unpleasant event must produce a compensating benefit.

Opponent processes in color vision

In color vision, opponent processing describes signals organized around red–green, blue–yellow, and black–white opposition. Some visual-system cells respond oppositely to the members of a pair. Negative afterimages illustrate this kind of processing. Trichromatic theory concerns three cone types; opponent-process theory concerns how their signals are compared. These are explanations at different stages of visual processing, not mutually exclusive answers. See OpenStax’s account of color vision. This is a separate application of a related organizing idea. A perceptual analogy is not proof of the motivational theory.