Refinements in Darwin’s theory of the origin of a moral sense create a framework equipped to organize and integrate contemporary theory and research on morality. Morality originated in deferential, cooperative, and altruistic ‘‘social instincts,’’ or decision-making strategies, that enabled early humans to maximize their gains from social living and resolve their conflicts of interest in adaptive ways. Moral judgments, moral norms, and conscience originated from strategic interactions among members of groups who experienced confluences and conflicts of interest. Moral argumentation buttressed (...) by moral reasoning is equipped to generate universal and impartial moral standards. Moral beliefs and standards are products of automatic and controlled information-processing and decision making mechanisms. To understand how people make moral decisions, we must understand how early evolved mechanisms in the old brain and recently evolved mechanisms in the new brain are activated and how they interact. Understanding what a sense of morality is for helps us understand what it is. (shrink)

In order to account fully for morality, Dennis Krebs departs from traditional approaches to morality that suggest that children acquire morals through ...

The implications of game theory models of the evolution of strategies of exchange are explored with respect to the evolution of moral dispositions. I argue that dispositions to practice tit for tat strategies could have evolved, but the moral behaviours to which they give rise do not fare well on criteria of morality. Inasmuch as the strategy implicit in the Golden Rule is unconditional, it could not have evolved in environments containing strategies that exploit it. However, dispositions to invoke conditional (...) principles such as those that prescribe that people cooperate with those they observe cooperating and shun those they observe behaving selfishly, could have been selected in some conditions and may have given rise to the evolution of indirect reciprocity. The key to the evolution of morality is discrimination in favour of cooperators and against cheaters and selfish individualists. The limitations of game theory in the explanation of human morality are acknowledged. (shrink)

Biological, cognitive, and learning explanations of altruism, selfishness, and self-control can be integrated in terms of adaptive strategies. The key to understanding why humans and other animals sometimes resist temptation and sacrifice their immediate interests for the sake of others lies in mapping the design of the evolved mental mechanisms that give rise to the decisions in question.

McKay & Dennett (M&D) have done an admirable job of distinguishing among various forms of misbelief and evaluating the idea that they stem from evolved mental mechanisms. We argue that a complete account of misbeliefs must attend to the role that others play in creating and maintaining positive illusions.

Evolutionary theory supplies a framework for integrative models of social behavior. In addition to those that include conditioning, evolutionary theory is equipped to explain the acquisition of structures designed to enable individuals to learn by observing others, create mental models of the environment, and coordinate social interactions by taking the perspectives of others.

I have been trying to understand the moral aspect of human nature for several decades. Several years ago, after publishing The Origins of Morality, an editor from Oxford Press suggested that I write up the theory and research I reviewed in this academic book in a manner that would be accessible to people with relatively little background knowledge in the area. A few years later, I launched this project, which ended up in this book. In it, I trace the grown (...) of my understanding of morality. (shrink)

I have been trying to understand the moral aspect of human nature for several decades. Several years ago, after publishing The Origins of Morality, an editor from Oxford Press suggested that I write up the theory and research I reviewed in this academic book in a manner that would be accessible to people with relatively little background knowledge in the area. A few years later, I launched this project, which ended up in this book. In it, I trace the grown (...) of my understanding of morality. (shrink)

Those who invoke the word self-deception to represent one phenomenon often argue that those who use it to represent another are misusing the construct. Better to recognize that self-deception is a fuzzy concept that may be used to represent a variety of mental processes and states, and to direct our energy toward distinguishing empirically among its forms and functions.