cover image Why Choose This Book?: How We Make Decisions

Why Choose This Book?: How We Make Decisions

Read Montague, . . Dutton, $24.95 (335pp) ISBN 978-0-525-94982-4

Why do we choose chocolate ice cream over vanilla ice cream? Why do we select one lover rather than another? Baylor University neuroscientist Montague (now a fellow at Princeton's Institute for Advanced Study) deftly marries psychology and neuroscience as he probes how we make choices. On one hand, decision making boils down to simple computation. Montague argues that our brains are efficient computational machines. But unlike computers, our brains fix on the goals of survival and reproduction, realizing that every hasty decision can be costly to the survival of the species. Our brains also harbor experiences (memories) that foster the choices we make. On the other hand, we can make choices that go against survival: for instance, we can choose to die for an idea. Why is that? Because, says Montague, human computations involve valuation, choosing between one value and another, requiring computation of cultural and psychological qualities. Although the notion of the brain as a computational machine can be traced at least as far back as Descartes, Montague adds new ideas to our understanding of how our brains compute. But his sometimes engaging and sometimes plodding book doesn't always explain the complex science for general readers. (Nov.)