Inertia effect

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The inertia effect (also: Inertia-Psi-Effekt ) ( lat. Inertia inertia) or inertia effect describes in psychology the phenomenon that once decisions are made, even against contradicting information , remain largely unchanged ("immune"). The informational value of preferred alternatives and hypotheses is overestimated and the value of opposing information is underestimated.

Explanatory approach

The inertia effect arises from an adjustment of subjective probabilities and perceptions . Linking probabilities leads to wrong results. In contrast to the predictable probability in the mathematical statistics these ideas are often associated with naivety and the tendency to avoid of cognitive dissonance connected ( "Naive statistician"). Cognitive dissonance occurs after a decision has been made and can lead to feelings of guilt , for example .

There is a similarity to the perseverance effect . Some authors equate this, other authors see differences insofar as inertia focuses more on selection behavior, perseverance on the other hand on the binding effect through pre-imprinting.

Individual evidence

  1. J. Cohen, EJ Chesnik, D. Haran: A confirmation of the inertia psi effect in sequential choice and decision. In: British Journal of Psychology ,. 63, 1972, pp. 41-46.
  2. Inertia-Effekt, Inertia-Psi-Effekt in DORSCH Lexikon der Psychologie
  3. ^ Inertia effect in the online lexicon of education and psychology
  4. Oliver Harry Gerson: The Right to Accuse. de Gruyter, 2016.