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person1960s-2018

Walter Mischel

Disciplines:
psychology

Summary

American psychologist who conducted the Stanford marshmallow experiment — and whose critique of personality traits and defense of situation-specificity transformed personality psychology.

Core Contribution

Stanford marshmallow experiment: children who delayed gratification showed better life outcomes decades later — a study of enormous popular influence (though its replication has been complicated). Personality and Assessment (1968): a devastating critique of the evidence for cross-situational consistency of personality traits — sparked the person-situation debate. Cognitive-affective system theory (CAPS): a reframing of personality in terms of cognitive-affective units activated by situations.

Key Spikes & Highlights

  • Personality and Assessment is one of the most influential and controversial books in psychology's history — it appeared to show that personality traits don't predict behavior across situations, threatening the entire field of personality psychology.
  • The marshmallow study's replication problems (a 2018 study found much weaker effects when controlling for socioeconomic status) have made it a case study in psychology's replication crisis.

Notable Works & Achievements

Personality and Assessment

Introduction to Personality

The Marshmallow Test

Historical Influences

George Kelly

Intellectual Lineage

Social Learning Theory Cognitive Psychology

Contemporaries & Peers

Martin Seligman

Minds Influenced

Positive Psychology Behavioral Economics

Intellectual Posterity

Delay of Gratification ResearchPersonality Psychology

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Walter Mischel

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