unSILOed with Greg LaBlanc

630. What Evolutionary Psychology Gets Wrong About Dating and Attraction with Paul Eastwick

Mar 16, 2026
Paul Eastwick, UC Davis psychology professor who studies attraction and relationships. He challenges common evolutionary-psych ideas about mating. He explains how apps distort competition and why first impressions are noisy. He highlights compatibility, the role of social networks, and practical ways to let chemistry develop naturally.
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INSIGHT

How Dating Apps Intensify Marketlike Competition

  • Online dating amplifies competition and flattens people into profiles, increasing perceived ruthlessness in mating markets.
  • Paul Eastwick cites women swiping right ~5% and more men on apps as concrete examples that skew selectivity and imbalance.
INSIGHT

Assortative Mating Is Real But Not Destiny

  • Assortative mating on traits like attractiveness exists but is far from deterministic; matching accuracy is roughly 70% by attractiveness alone.
  • Eastwick's classroom demo with numbered foreheads shows real-world sorting is weaker than imagined.
INSIGHT

Individual Traits Poorly Predict Long-Term Relationship Success

  • Predicting long-term relationship happiness from individual traits is poor: models explain about 5% in ongoing relationships versus ~20% for initial desirability.
  • Eastwick used machine learning on personality and background data to show this stark drop.
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