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13Part One · History

What Caffeine Does to an Argument

What research says about caffeine, psychedelics and the mind — persuasion, creativity, neural growth and political views.

Questions this chapter answers

  • Does caffeine make people easier to persuade?

    In a 2005 experiment it did — but by making people engage with the argument more thoroughly, not by making them docile.

  • Does caffeine help creativity?

    In a 2020 trial of 80 people, 200 mg improved convergent thinking, solving the problem in front of them, and did nothing for divergent thinking.

  • What do studies actually show about psilocybin and the brain?

    The answer is in the book →

  • Is it true that caffeine makes people compliant and psychedelics make them free?

    The answer is in the book →

Short answers only. Chapter 13 gives the full account, with 4 footnotes to 4 sources.

Sources

4 footnotes to 4 sources. Full references are in the bibliography.

  1. Martin, Pearl Y., Jenny Laing, Robin Martin and Melanie Mitchell. “Caffeine, Cognition, and Persuasion: Evidence for Caffeine Increasing the Systematic Processing of Persuasive Messages.” Journal of Applied Social Psychology 35, no. 1 (2005): 160–182. DOI 10.1111/j.1559-1816.2005.tb02098.x.
  2. Zabelina, Darya L. and Paul J. Silvia. “Percolating Ideas: The Effects of Caffeine on Creative Thinking and Problem Solving.” Consciousness and Cognition 79 (2020): 102899. DOI 10.1016/j.concog.2020.102899.
  3. Shao, Ling-Xiao, Clara Liao, Ian Gregg et al. “Psilocybin Induces Rapid and Persistent Growth of Dendritic Spines in Frontal Cortex in vivo.” Neuron 109, no. 16 (2021): 2535–2544.e4. DOI 10.1016/j.neuron.2021.06.008.
  4. Lyons, Taylor and Robin L. Carhart-Harris. “Increased Nature Relatedness and Decreased Authoritarian Political Views after Psilocybin for Treatment-Resistant Depression.” Journal of Psychopharmacology 32, no. 7 (2018): 811–819. DOI 10.1177/0269881117748902.