
Discover why Western societies are psychologically "WEIRD" - Western, Educated, Industrialized, Rich, Democratic. Joseph Henrich reveals how the Catholic Church's ban on cousin marriage reshaped human psychology, creating societies that philosopher Daniel Dennett calls "uniquely peculiar" compared to the rest of humanity.
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Imagine waking up tomorrow with your brain physically rewired-your corpus callosum thickened, your facial recognition shifted to a different hemisphere. This isn't science fiction-it's what happens when you learn to read. Yet for most of human history, literacy was rare, with rates below 10% until the 16th century when Protestant regions began developing the world's most literate societies. This transformation wasn't driven by industrialization but by religious conviction: the Protestant principle that everyone should read the Bible themselves. This neurological rewiring across populations represents just the tip of a massive psychological iceberg that has shaped human history in profound ways we're only beginning to understand. If you're reading this, you're likely psychologically peculiar from a global and historical perspective. Psychologists use the acronym WEIRD (Western, Educated, Industrialized, Rich, and Democratic) to describe a psychological package that makes many of us statistical outliers in the human family. But how did this peculiar psychology emerge? And why does it matter for understanding our world today?