Editing Reciprocity (section)

==Social sciences and humanities==
* [[Norm of reciprocity]], social norm of in-kind responses to the behavior of others
* [[Reciprocity (cultural anthropology)]], way of defining people's informal exchange of goods and labour
* [[Reciprocity (evolution)]], mechanisms for the evolution of cooperation
* [[Reciprocity (international relations)]], principle that favours, benefits, or penalties that are granted by one state to the citizens or legal entities of another, should be returned in kind
* [[Reciprocity (social and political philosophy)]], concept of reciprocity as in-kind positive or negative responses for the actions of others
* [[Reciprocity (social psychology)]], in-kind positively or negatively connoted responses of individuals towards the actions of others
* Ethic of reciprocity (the [[Golden Rule]]), that one should treat others as one would like others to treat oneself
* [[Serial reciprocity]], in which the benefactor of a gift or service will in turn provide benefits to a third party