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Collective hormonal profiles predict group performance.

Modupe Akinola1, Elizabeth Page-Gould2, Pranjal H Mehta3

  • 1Columbia Business School, Columbia University, New York, NY 10027; makinola@columbia.edu.

Proceedings of the National Academy of Sciences of the United States of America
|August 17, 2016
PubMed
Summary
This summary is machine-generated.

Groups with high collective testosterone and low collective cortisol levels performed best. This study reveals how group hormone levels impact performance and hierarchy, extending the dual-hormone hypothesis to group dynamics.

Keywords:
cortisolgroupsperformancestatustestosterone

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Area of Science:

  • Social neuroscience
  • Group dynamics
  • Organizational behavior

Background:

  • Individual hormonal profiles influence social standing.
  • Previous research focused on individual, not group, hormone levels.

Purpose of the Study:

  • To investigate the relationship between a group's collective hormonal profile and its performance.
  • To introduce and test the concept of a collective hormonal profile.

Main Methods:

  • Analysis of 370 individuals in 74 groups (3-6 people per group).
  • Examined group-level concentrations of testosterone and cortisol.
  • Controlled for personality traits and individual hormone variability.

Main Results:

  • Group-level testosterone and cortisol interact to predict group performance.
  • Groups with high collective testosterone and low collective cortisol showed the highest performance.
  • Findings were robust after controlling for confounding factors.

Conclusions:

  • A group's collective hormonal profile, specifically the interplay of testosterone and cortisol, predicts its success.
  • This research extends the dual-hormone hypothesis to the group level.
  • Highlights the neurobiological underpinnings of group hierarchy and performance.