Cognitive dissonance theory
Inconsistent commitments can create pressure to reduce psychological discomfort.
Theory The classification describes how this account is used here; it is not an evidence rating.
Central claim
Acting against a personally relevant belief or holding conflicting commitments generates aversive psychological tension, motivating attitude change, selective justification, or behavioral revision to restore consistency.
Proposed mechanism
People may change an attitude, reinterpret an action or add justifications. The inconsistency must matter to the person; merely holding two different ideas is not enough to infer dissonance.
Evidence: (Spielman et al., 2020); (Festinger & Carlsmith, 1959)
What would it predict?
Under meaningful choice, counter-attitudinal action with weak external justification can produce more attitude change than the same action with strong justification.
An original test formulation derived from the account, not a claim that this exact study was performed.
Evidence and status
Following Festinger's (1957) formulation, Festinger and Carlsmith's 1959 study asked participants to describe a dull task positively for different payments. The pattern of later evaluations supported an insufficient-justification prediction in that setting.
Evidence: (Spielman et al., 2020); (Festinger & Carlsmith, 1959)
Major contributors
Leon Festinger; James Carlsmith; later experimental contributors
A selective attribution, not a complete intellectual genealogy or a sole-founder claim.
Apply the explanation
Original teaching scenario
A person freely endorses a tedious activity for little reward and later judges it more favorably. The proposed mechanism is a hypothesis to test, not proof from the story.
Constructed for learning. This scenario does not report an empirical result.
Common confusion: Logical contradiction alone or self-perception without tension
Dissonance requires a personally consequential inconsistency that produces motivational discomfort, whereas self-perception accounts infer attitudes coolly from observing one's own behavior without assuming aversive tension.
Evidence: (Spielman et al., 2020); (Festinger & Carlsmith, 1959)
Limits and alternatives
- One laboratory result does not show that every contradiction changes belief. Self-perception, demand and differences in commitment require consideration; cultural meanings can alter which inconsistency is consequential.
Evidence: (Spielman et al., 2020); (Festinger & Carlsmith, 1959)
Textbook connection
Direct coveragePsychology 2e: 12.3 Attitudes and Persuasion
This section directly discusses the account presented here. The profile is an original synthesis, not a reproduction of the textbook.
Related explanations
Sources and inspection notes
Checked October 21, 2026. An inspection date is not a publication date. Original experiments described by a textbook are not individually re-audited unless a separate primary source is listed.
- Festinger, L., & Carlsmith, J. M. (1959). Cognitive consequences of forced compliance. Journal of Abnormal and Social Psychology, 58(2), 203–210. https://psychclassics.yorku.ca/Festinger/Primary article, university-hosted full text inspected
Supports the original payment manipulation and its insufficient-justification prediction. The restricted sample and laboratory design limit generalization.
- Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020). Psychology 2e. OpenStax. https://openstax.org/books/psychology-2e/pages/12-3-attitudes-and-persuasionTextbook section inspected, October 21, 2026
Supports the introductory account and historical framing. Does not independently verify every original experiment cited by the textbook.