A gift economy or gift culture is a system of exchange where valuables are not sold, but rather given without an explicit agreement for immediate or future rewards. Social norms and customs govern giving a gift in a gift culture; although there is some expectation of reciprocity, gifts are not given in an explicit exchange of goods or services for money, or some other good or service. This contrasts with a market economy or bartering, where goods and services are primarily explicitly exchanged for value received.
The nature of gift economies is the subject of a foundational debate in anthropology. Anthropological research into gift economies began with Bronisław Malinowski's description of the Kula ring in the Trobriand Islands during World War I. The Kula trade appeared to be gift-like since Trobrianders would travel great distances over dangerous seas to give what were considered valuable objects without any guarantee of a return. Malinowski's debate with the French anthropologist Marcel Mauss quickly established the complexity of "gift exchange" and introduced a series of technical terms such as reciprocity, inalienable possessions, and presentation to distinguish between the different forms of exchange.
