Do acts of kindness improve the well-being of the actor? Recent advances in the
behavioural sciences have provided a number of explanations of human social, cooperative …

We review a broad range of work, primarily in cognitive and social psychology, that provides
insight into the processes of moral judgment. In particular, we consider research on …

Now that various countries are or will soon be moving towards relaxing shelter-in-place
rules, it is important that people use a face covering, to avoid an exponential resurgence of …

What is morality? And to what extent does it vary around the world? The theory of “morality-
as-cooperation” argues that morality consists of a collection of biological and cultural …

Most vaccines protect both the vaccinated individual and the society by reducing the
transmission of infectious diseases. In order to eliminate infectious diseases, individuals …

Abstract Morality-as-Cooperation (MAC) is the theory that morality is a collection of
biological and cultural solutions to the problems of cooperation recurrent in human social …

The topic of this entry is not—at least directly—moral theory; rather, it is the definition of
morality. Moral theories are large and complex things; definitions are not. The question of …

We review the literature on models that try to explain human behavior in social interactions
described by normal-form games with monetary payoffs. We start by covering social and …

Reputations provide a powerful mechanism to sustain cooperation, as individuals cooperate
with those of good social standing. But how should someone's reputation be updated as we …

The COVID-19 pandemic has extensively changed the state of psychological science from
what research questions psychologists can ask to which methodologies psychologists can …