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Related Experiment Videos

The mumpsimus.

David W Chambers

    The Journal of the American College of Dentists
    |May 30, 2003
    PubMed
    Summary
    This summary is machine-generated.

    People often resist changing their beliefs, even when faced with evidence. This tendency, known as the mumpsimus effect, explains why individuals escalate commitment to failing causes and why beliefs are so resistant to reason.

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    Area of Science:

    • Psychology
    • Cognitive Science
    • Behavioral Economics

    Background:

    • Human nature often involves a reluctance to alter established beliefs when confronted with contradictory evidence.
    • Extreme cases of this cognitive rigidity are termed 'mumpsimuses'.

    Purpose of the Study:

    • To explore the psychological underpinnings of why individuals persist in escalating commitment to unsuccessful endeavors.
    • To investigate the reasons behind the remarkable resistance of beliefs to change, even when presented with logical counterarguments.

    Main Methods:

    • Review of existing psychological and behavioral research on cognitive biases.
    • Analysis of case studies illustrating the escalation of commitment.
    • Examination of research on belief perseverance and motivated reasoning.

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    Main Results:

    • Individuals often exhibit confirmation bias, seeking information that supports existing beliefs.
    • Sunk cost fallacy contributes to escalating commitment, where past investments influence future decisions.
    • Emotional and social factors can reinforce belief systems, making them resistant to objective evidence.

    Conclusions:

    • Understanding the mumpsimus effect is crucial for addressing cognitive biases in decision-making.
    • Recognizing the psychological barriers to changing beliefs can improve critical thinking and evidence evaluation.
    • Interventions aimed at overcoming belief resistance may need to address both cognitive and emotional components.