|Original language||English (US)|
|Title of host publication||Encyclopedia of Human Relationships|
|Editors||Harry T. Reis, Susan Sprecher|
|Place of Publication||Thousand Oaks, CA|
|Publisher||SAGE Publications, Inc|
|Number of pages||4|
|State||Published - 2009|
Reciprocity is a central feature of human relationships. The ethic of reciprocity is espoused by nearly every major religion, and human culture would grind to a halt if people did not routinely exchange goods, services, and other benefits with one another. Reciprocity of liking (also called reciprocity of attraction or reciprocal liking) is a particular type of reciprocity that refers to the tendency for people to like others who express liking for them. Reciprocity of liking is a key principle of attraction; at times, it has even been called a cultural truism. This entry reviews research and theory about reciprocity of liking.