Mind Matters

Jonah Lehrer’s engaging new book, “How We Decide,” puts our decision-making skills under the microscope. At 27, Lehrer is something of a popular science prodigy, having already published, in 2007, “Proust Was a Neuroscientist,” which argued that great artists anticipated the insights of modern brain science. “How We Decide” tilts more decisively in the thinking-­person’s self-help direction, promising not only to explain how we decide, but also to help us do it better.

This is not exactly uncharted terrain. Early on, Lehrer introduces his main theme: “Sometimes we need to reason through our options and carefully analyze the possibilities. And sometimes we need to listen to our emotions.” Most readers at this point, I suspect, will naturally think of Malcolm Gladwell’s mega-best-seller “Blink,” which explored a similar boundary between reason and intuition. But a key difference between the two books quickly emerges: Gladwell’s book took an external vantage point on its subject, drawing largely on observations from psychology and sociology, while Lehrer’s is an inside job, zooming in on the inner workings of the brain. We learn about the nucleus accumbens, spindle cells and the prefrontal cortex. Many of the experiments he recounts involve fMRI scans of brains in the process of making decisions (which, for the record, is a little like making a decision with your head stuck in a spinning clothes dryer).