Evolution and the Capacity for Commitment
About This Book
"Nothing is more basic to the human condition than the capacity for commitment, and nothing is more important to the capacity than its biological underpinnings and evolution. Randolph Nesse, serving as editor and connecting essayist, and the other authors of Evolution and the Capacity for Commitment are among the leaders in and around this newly emerging field of scholarship."
-EDWARD O. WILSON, Harvard University
"If the genes of the self-serving are more likely to be perpetuated in succeeding generations, how is it that so many of us forgo self-interest in order to honor commitments, devote large portions of our lives to the quest for knowledge, defending animal rights, human rights, or remaining true to a cause past reason? We humans routinely behave better than conventional evolutionary theory predicts we should. Evolution and the Capacity for Commitment resolves this paradox and in doing so, extends sociobiological theory to more fully encompass idiosyncracies of the human heart. This is a revelatory book that carries us beyond premature conclusions about innate selfishness that, if accepted, erode human relationships based on any other premise. Anyone looking for a rigorous alternative to Darwin's 'universal acid,' should read this book."
SARAH BLAFFER HRDY, University of California at Davis
"In the 1970s, the word 'selfish' was kidnapped from common language to be applied to genes. This metaphor, however, did not say much about human psychology. Exploring the emotional make up of our species while firmly staying within an evolutionary framework, this volume spells out better than any before what is wrong with a narrow focus on human selfishness."
-FRANS B. M. DE WAAL, Emory University
"This is a very valuable contribution to our understanding of commitment which no serious student of the subject will wish to miss."
-ROBERT TRIVERS, Rutgers University
Commitment is at the core of social life. The social fabric is woven from promises and threats that are not always immediately advantageous to the parties involved. Many commitments, such as signing a contract, are fairly straightforward deals, in which both parties agree to give up certain options. Other commitments, such as the promise of life-long love or a threat of murder, are based on more intangible factors such as human emotions. In Evolution and the Capacity for Commitment, distinguished researchers from the fields of economics, psychology, ethology, anthropology, philosophy, medicine, and law offer a rich variety of perspectives on the nature of commitment and question whether the capacity for making, assessing, and keeping commitments has been shaped by natural selection.
Game theorists have shown that players who use commitment strategies—by learning to convey subjective offers and to gauge commitments others are willing to make—achieve greater success than those who rationally calculate every move for immediate reward. Evolution and the Capacity for Commitment includes contributions from some of the pioneering students of commitment. Their elegant analyses highlight the critical role of reputation-building, and show the importance of investigating how people can believe that others would carry out promises or threats that go against their own self-interest. Other contributors provide real-world examples of commitment across cultures and suggest the evolutionary origins of the capacity for commitment.
Perhaps nowhere is the importance of commitment and reputation more evident than in the institutions of law, medicine, and religion. Essays by professionals in each field explore why many practitioners remain largely ethical in spite of manifest opportunities for client exploitation. Finally, Evolution and the Capacity for Commitment turns to leading animal behavior experts to explore whether non-humans also use commitment strategies, most notably through the transmission of threats or signs of non-aggression. Such examples illustrate how such tendencies in humans may have evolved.
Viewed as an adaptive evolutionary strategy, commitment offers enormous potential for explaining complex and irrational emotional behaviors within a biological framework. Evolution and the Capacity for Commitment presents compelling evidence for this view, and offers a potential bridge across the current rift between biology and the social sciences.
RANDOLPH NESSE is professor of psychiatry and professor of psychology at the University of Michigan.
CONTRIBUTORS: Randolph Nesse, Eldridge S. Adams, Robert Boyd, Dov Cohen, Lee Alan Dugatkin, Robert H. Frank, Herbert Gintis, Oliver R. Goodenough, Jack Hirshleifer, William Irons, Peter J. Richerson, Michael Ruse, Thomas C. Schelling, Joan B. Silk, and Joseph Vandello.
A Volume in the Russell Sage Foundation Series on Trust