Reputation and reciprocity are key mechanisms for cooperation in human societies, often
going hand in hand to favor prosocial behavior over selfish actions. Here we review recent …

When one individual helps another, it benefits the recipient and may also gain a reputation
for being cooperative. This may induce others to favour the helper in subsequent …

Direct and indirect reciprocity are key mechanisms for the evolution of cooperation. Direct
reciprocity means that individuals use their own experience to decide whether to cooperate …

The level of antagonism between political groups has risen in the past years. Supporters of a
given party increasingly dislike members of the opposing group and avoid intergroup …

Humans exhibit a remarkable capacity for cooperation among genetically unrelated
individuals. Yet, human cooperation is neither universal, nor stable. Instead, cooperation is …

Context: Increased attention has been placed on the role of technological artefacts in the
promotion of prosocial behaviours. However, up to this date, there is still no systematic …

Despite the accumulation of research on indirect reciprocity over the past 30 years and the
publication of over 100,000 related papers, there are still many issues to be addressed …

Indirect reciprocity is a mechanism for cooperation based on shared moral systems and
individual reputations. It assumes that members of a community routinely observe and …

In this survey, we briefly review some recent advances in the field of indirect reciprocity and
reputation mechanism along the routes of theoretical modeling and behavior experiments …

The concept of fitness is central to evolution, but it quantifies only the expected number of
offspring an individual will produce. The actual number of offspring is also subject to …