As machines powered by artificial intelligence (AI) influence humans' behaviour in ways that
are both like and unlike the ways humans influence each other, worry emerges about the …

The occurrence of cooperation poses a problem for the biological and social sciences.
However, many aspects of the biological and social science literatures on this subject have …

Previous research has shown that the matching of rhythmic behaviour between individuals
(synchrony) increases cooperation. Such synchrony is most noticeable in music, dance and …

Large-scale societies in which strangers regularly engage in mutually beneficial
transactions are puzzling. The evolutionary mechanisms associated with kinship and …

A critical question facing experimental economists is whether behavior inside the laboratory
is a good indicator of behavior outside the laboratory. To address that question, we build a …

One lingering puzzle is why voluntary contributions to public goods decline over time in
experimental and real-world settings. We show that the decline of cooperation is driven by …

Experimenter demand effects refer to changes in behavior by experimental subjects due to
cues about what constitutes appropriate behavior. We argue that they can either be social or …

We explore the idea that prosocial behavior in experimental games is driven by social norms
imported into the laboratory. Under this view, differences in behavior across subjects is …

Laboratory researchers in economics assiduously protect the confidentiality of subjects.
Why? Presumably because they fear that the social consequences of identifying subjects …

Evolutionary theory reveals that punishment is effective in promoting cooperation and
maintaining social norms. Although it is accepted that emotions are connected to …