One of the most successful and widespread errors in all of science

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A note for Lesson no. 1, "You Have One Brain (Not Three)," in Seven and a Half Lessons About the Brain by Lisa Feldman Barrett.
Some context from page 15 is:

The triune brain story is one of the most successful and widespread errors in all of science.

The appendix adds:

Scientists work hard to avoid ideology, but we are also people, and people are sometimes guided by belief more than data.

The references associated with this appendix entry are:

To read about the history of scientific discoveries that disconfirmed the triune brain hypothesis, see chapter 2 of Striedter.[6]


  1. Gee, Henry. 2013. The Accidental Species: Misunderstandings of Human Evolution. Chicago: University of Chicago Press.
  2. MacLean, Paul D. 1990. The Triune Brain in Evolution: Role in Paleocerebral Functions. Berlin: Springer.
  3. Lewontin, Richard. 1991. Biology as Ideology: The Doctrine of DNA. New York: Harper Collins
  4. Firestein, Stuart. 2012. Ignorance: How It Drives Science. New York: Oxford University Press.
  5. Firestein, Stuart. 2016 Failure: Why Science Is So Successful. New York: Oxford University Press.
  6. Striedter, Georg. 2005. Principles of Brain Evolution. Sunderland, Massachusetts: Sinauer Associates.