In everyday social exchanges, being mean to people has a lot more impact than being nice, research has shown. Feeling slighted can have a bigger difference on how a person responds than being the ...

Chung, Doug J., and Das Narayandas. "Incentives versus Reciprocity: Insights from a Field Experiment." Journal of Marketing Research (JMR) 54, no. 4 (August 2017): 511–524. (Lead article.) ...

Scientists set out to better understand how and when positive direct reciprocity -- paying back a kindness to a specific individual -- develops in young children. The findings suggest that for ...

Some of the most fundamental questions concerning our evolutionary origins, our social relations, and the organization of society are centred around issues of altruism and selfishness. Experimental ...