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What it argues
Paul Bloom's central question is how much morality is innate versus learned. Using research from his Yale infant cognition lab and from developmental psychology more broadly, Just Babies argues that babies come into the world with a surprisingly rich set of moral intuitions: a preference for helpful over harmful agents, a rudimentary sense of fairness, some capacity for empathy, and the beginnings of in-group/out-group discrimination. The moral life doesn't start from a blank slate.
The evidence is striking. Infants as young as six months prefer puppets who help others over those who hinder them. They show upset at unequal distributions of resources. They respond to the distress of others with something that looks behaviorally like empathy. This work challenges both the Hobbes view (humans are naturally selfish) and the Rousseau view (humans are naturally good until corrupted by civilization). The more accurate picture, Bloom argues, is that humans are naturally something in between: capable of genuine concern for others but only within a limited circle, prone to fairness but only in ways that often favor themselves, empathic but selective about whose suffering actually registers.
What it gets right
- 1.
Infants have a genuine moral sense. By six months, babies prefer agents who help others over those who hinder them, suggesting moral evaluation precedes language and explicit teaching.
- 2.
The innate moral kit is limited by scope. We are naturally more prosocial toward familiar, similar people and instinctively more suspicious of the unfamiliar or different.
- 3.
Fairness intuitions appear early, but they are not impartial. Infants and children show a strong preference for equal distributions, but in practice often interpret fairness in ways that favor their own group.
What it covers
Who wrote it
Paul Bloom is a professor of psychology at the University of Toronto and emeritus professor at Yale, where he ran the infant cognition lab for many years. He is the author of several books including How Pleasure Works, Against Empathy, and The Sweet Spot, and he writes regularly for the Atlantic and other publications. Bloom's research and writing focus on moral psychology, emotion, and the ways intuition and reason interact in everyday life. He is known for taking contrarian positions grounded in experimental evidence and for making cognitive science accessible to non-specialist audiences.
