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Publisher's Summary

Why do we do the things we do?
More than a decade in the making, this game-changing book is Robert Sapolsky's genre-shattering attempt to answer that question as fully as perhaps only he could, looking at it from every angle. Sapolsky's storytelling concept is delightful, but it also has a powerful intrinsic logic: He starts by looking at the factors that bear on a person's reaction in the precise moment a behavior occurs and then hops back in time from there in stages, ultimately ending up at the deep history of our species and its evolutionary legacy.
And so the first category of explanation is the neurobiological one. A behavior occurs - whether an example of humans at our best, worst, or somewhere in between. What went on in a person's brain a second before the behavior happened? Then Sapolsky pulls out to a slightly larger field of vision, a little earlier in time: What sight, sound, or smell caused the nervous system to produce that behavior? And then, what hormones acted hours to days earlier to change how responsive that individual is to the stimuli that triggered the nervous system? By now he has increased our field of vision so that we are thinking about neurobiology and the sensory world of our environment and endocrinology in trying to explain what happened.
Sapolsky keeps going. How was that behavior influenced by structural changes in the nervous system over the preceding months, by that person's adolescence, childhood, fetal life, and then back to his or her genetic makeup? Finally he expands the view to encompass factors larger than one individual. How did culture shape that individual's group? What ecological factors millennia old formed that culture? And on and on, back to evolutionary factors millions of years old.
The result is one of the most dazzling tours d'horizon of the science of human behavior ever attempted, a majestic synthesis that harvests cutting-edge research across a range of disciplines to provide a subtle and nuanced perspective on why we ultimately do the things we do...for good and for ill. Sapolsky builds on this understanding to wrestle with some of our deepest and thorniest questions relating to tribalism and xenophobia, hierarchy and competition, morality and free will, and war and peace. Wise, humane, often very funny, Behave is a towering achievement, powerfully humanizing, and downright heroic in its own right.
©2017 Robert M. Sapolsky (P)2017 Penguin Audio
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Customer Reviews

Most Helpful
5 out of 5 stars
By Doug Hay on 07-27-17


I'm a salesman with no medical training. Not going to lie, getting through the first 1/3 of this book was TOUGH with me listening at about 20% my normal speed! BUT, the payoff was worth this investment with this being one of the most important books I've read. Surprisingly it will not help me so much in sales as its helping me understand myself, how to relate better to other people, and how to boost my compassion -- especially to those with chronic stress. Well worth the read for anyone wishing to be a better human being.

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67 of 67 people found this review helpful

5 out of 5 stars
By Philomath on 05-17-17

The most comprehensive scientific look at behaviour

Robert Sapolsky does not disappoint. This book is as detailed and scientific as any I've read on behaviour. The author delves in technical detail on all aspects of human behaviour, starting with the brain, the animal, the genes, society, environment, and as many factors as one can think of that can fit in a book this size.

This is not for the lame reader. It is meant for someone who has established basic knowledge on behaviour and wants to expand it.

We think we know a lot, but Sapolsky humbles us by explaining the complexity of the subject.

Highly recommended to anyone who wants to know the relatively knew science of behaviour from a truly scientific perspective.

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59 of 60 people found this review helpful

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