
Lesson · 4 min Stretch
Who Decides What Is Normal?
In one line Foucault showed that categories like madness and normal behavior have histories, shaped by the institutions that use them.
Michel Foucault was a French philosopher and historian of the twentieth century. In History of Madness, published in 1961, he traced how European societies came to confine people labeled mad in special institutions, and how medicine then claimed to know what madness is.
He found a pattern that runs through schools, hospitals, armies and prisons: the power to define what is normal. Through tests, records and examinations, institutions measure people against a norm, sort them, and train them to fit it. Foucault called this normalization. It works quietly, often through experts acting in good faith.
His point was not that every category is false, but that categories have histories and serve purposes. A related lesson, Nothing to Hide?, describes his use of the panopticon.
Go deeper
Foucault called his method genealogy, borrowing the word from Nietzsche. Historians of psychiatry have challenged parts of History of Madness, and philosophers have asked whether Foucault left room for truth or for the reasons people have to resist. His influence on the humanities and social sciences has nonetheless been enormous.
The reading groups

A school sorts seven-year-olds into reading groups named after colors. Within a term, children in the slowest group start calling themselves bad readers.
A teacher asks when the groups began, who designed the test, and what the label does. She finds the test was meant for scheduling. Once she sees how the label shapes the children, she changes how the groups are named and moved.
Try this today Pick one label used about people at work or school, and ask who created it, when, and what it lets them do.
Cite or share this lesson
A plain reference you can paste into notes or an essay:
Quest2Reason. “Who Decides What Is Normal?.” https://quest2reason.com/learn/lesson/who-decides-what-is-normal. Accessed 13 November 2026.
Sources
- Internet Encyclopedia of Philosophy, “Michel Foucault” — Covers his histories of madness and the clinic, normalization and his method of genealogy.
- Wikipedia, “History of Madness” — Summarizes the 1961 book and the scholarly debate about it.
