who created the idea that reciprocity is important for maintaining relationships
Reciprocity (social psychology) Reciprocity dates as far back as the time of Hammurabi (c. 1792â€“1750 BC). Hammurabi's code, a collection of 282 laws and standards, lists crimes and their various punishments as well as guidelines for citizens' conduct.[citation needed] The code was formalized example that demanded the individual act in terms of the public interest. The "eye for an eye" principles in which the laws were written mirror the idea of direct reciprocity. For example, if a person caused the death of another person, the killer would be put to death: