There are two classes of people in the world, the old saw goes, those who divide humanity into two classes, and those who do not.
The charms of easy categorization and broad generalization have tempted social scientists for centuries. But the trend has picked up speed, especially in psychology, over the last several decades, as Jesse Singal capably demonstrates in The Quick Fix, his engaging and persuasive examination of the growing, unfortunate popularity of faddish theories and their prosperous purveyors.
This article appears as “Fixing the Fixers” in the July 1, 2021, print edition of National Review.
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