Game Theory and Morality

Moshe Hoffman , Erez Yoeli , and Carlos David Navarrete
The Evolution of Morality
Part of the series Evolutionary Psychology pp 289-316

Here is an excerpt:

The key result for evolutionary dynamic models is that, except under extreme conditions, behavior converges to Nash equilibria. This result rests on one simple, noncontroversial assumption shared by all evolutionary dynamics: Behaviors that are relatively successful will increase in frequency. Based on this logic, game theory models have been fruitfully applied in biological contexts to explain phenomena such as animal sex ratios (Fisher, 1958), territoriality (Smith & Price, 1973), cooperation (Trivers, 1971), sexual displays (Zahavi, 1975), and parent–offspring conflict (Trivers, 1974). More recently, evolutionary dynamic models have been applied in human contexts where conscious deliberation is believed to not play an important role, such as in the adoption of religious rituals (Sosis & Alcorta, 2003 ), in the expression and experience of emotion (Frank, 1988 ; Winter, 2014), and in the use of indirect speech (Pinker, Nowak, & Lee, 2008).

 Crucially for this chapter, because our behaviors are mediated by moral intuitions and ideologies, if our moral behaviors converge to Nash, so must the intuitions and ideologies that motivate them. The resulting intuitions and ideologies will bear the signature of their game theoretic origins, and this signature will lend clarity on the puzzling, counterintuitive, and otherwise hard-to-explain features of our moral intuitions, as exemplified by our motivating examples.

In order for game theory to be relevant to understanding our moral intuitions and ideologies, we need only the following simple assumption: Moral intuitions and ideologies that lead to higher payoffs become more frequent. This assumption can be met if moral intuitions that yield higher payoffs are held more tenaciously, are more likely to be imitated, or are genetically encoded. For example, if every time you transgress by commission you are punished, but every time you transgress by omission you are not, you will start to intuit that commission is worse than omission.

The book chapter is here.

Is Robust Moral Realism a kind of Religious Belief?

John Danaher
Philosophical Disquisitions
Originally posted September 11, 2016

Robust moral realism is the view that moral facts exist, but that they are not reducible to non-moral or natural facts. According to the robust realist, when I say something like ‘It is morally wrong to torture an innocent child for fun’, I am saying something that is true, but whose truth is not reducible to the non-moral properties of torture or children. Robust moral realism has become surprisingly popular in recent years, with philosophers like Derek Parfit, David Enoch, Erik Wielenberg and Russell Shafer-Landau all defending versions of it.

What is interesting about these philosophers is that they are all avowedly non-religious in their moral beliefs. They don’t think there is any connection between morality and the truths of any particular religion. Indeed, several of them are explicitly atheistic in their moral outlook. In a recent paper, however, David Killoren has argued that robust moral realism is a kind of religious belief: one that must be held on faith and that shares other properties with popular religions. At the same time, he argues that it is an ‘excellent’ kind of religious belief, one that could be attractive to the non-religious and religious alike.

The blog post is here.

Evolutionary Moral Realism

By John Collier and Michael Stingl
Biological Theory
March 2013, Volume 7, Issue 3, pp 218-226

Abstract

Evolutionary moral realism is the view that there are moral values with roots in evolution that are both specifically moral and exist independently of human belief systems. In beginning to sketch the outlines of such a view, we examine moral goods like fairness and empathetic caring as valuable and real aspects of the environments of species that are intelligent and social, or at least developing along an evolutionary trajectory that could lead to a level of intelligence that would enable individual members of the species to recognize and respond to such things as the moral goods they in fact are. We suggest that what is most morally interesting and important from a biological perspective is the existence and development of such trajectories, rather than the position of one particular species, such as our own, on one particular trajectory.

The entire article is here.

Moral Realism

Sayre-McCord, Geoff, "Moral Realism"
The Stanford Encyclopedia of Philosophy (Spring 2015 Edition), Edward N. Zalta (ed.)

Here is an excerpt:

Nonetheless, realists and anti-realists alike are usually inclined to hold that Moore’s Open Question Argument is getting at something important—some feature of moral claims that makes them not well captured by nonmoral claims.

According to some, that ‘something important’ is that moral claims are essentially bound up with motivation in a way that nonmoral claims are not (Ayer 1936, Stevenson 1937, Gibbard 1990, Blackburn 1993). Exactly what the connection to motivation is supposed to be is itself controversial, but one common proposal (motivation internalism) is that a person counts as sincerely making a moral claim only if she is motivated appropriately. To think of something that it is good, for instance, goes with being, other things equal, in favor of it in ways that would provide some motivation (not necessarily decisive) to promote, produce, preserve or in other ways support it. If someone utterly lacks such motivations and yet claims nonetheless that she thinks the thing in question is good, there is reason, people note, to suspect either that she is being disingenuous or that she does not understand what she is saying. This marks a real contrast with nonmoral claims since the fact that a person makes some such claim sincerely seems never to entail anything in particular about her motivations. Whether she is attracted by, repelled by, or simply indifferent to some color is irrelevant to whether her claim that things have that color are sincere and well understood by her.

The entire entry is here.

Editor's Note: This article is for those psychologists more inclined to read philosophy.