By Robert M. Sapolsky
#6399 This book by the celebrated neurobiologist and primatologist Robert Sapolsky is a landmark, genre-defining examination of human behavior, both good and bad, and an answer to the question: Why do we do the things we do?
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 thus the first category of explanation is the neurobiological one. A behavior occurs. 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. 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.
800 pages. Paperback. 2017. $20.00. SPECIALS: 10 copies for $183.95; 100 copies for $1,699.95.
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