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Why Is It so Hard to Do Good Science?

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Area of Science:

  • Cognitive Psychology
  • Scientific Methodology
  • Behavioral Economics

Background:

  • Replication crisis in biomedical research highlights the need for improved objectivity.
  • Psychological decision-making biases, well-documented in economics, also influence scientific judgment.
  • Statistical methods alone cannot eliminate cognitive biases in scientific conclusions.

Purpose of the Study:

  • To investigate the influence of cognitive biases on scientific judgment among scientists.
  • To replicate classic decision-making experiments with a population of scientists.
  • To identify inherent intuitions affecting scientific decision-making processes.

Main Methods:

  • Replication of experiments by Kahneman and colleagues using written scenarios.
  • Participants included scientists across various career stages.
  • Analysis of scientists' written reactions to hypothetical research scenarios.

Main Results:

  • Scientists exhibited similar cognitive biases as observed in earlier studies with undergraduates.
  • Key biases include the drive for narrative coherence and pattern seeking in data.
  • Tendency to overlook result likelihood irrespective of p-values was observed.

Conclusions:

  • Inherent cognitive biases significantly impact scientific judgment and decision-making.
  • Overcoming natural tendencies for quick decisions and narrative construction is essential for good science.
  • Mitigating these biases requires learning and applying specific skills to enhance experimental rigor.