McLeish, Kendra N.; Oxoby, Robert J. - Institute for the Study of Labor (IZA) - 2007
paper, we conduct laboratory experiments in which we explore the motivations for and the effects of group identity. We find … that negative out-group opinion (acting as an inter-group identity threat) can motivate in-group/out-group effects in a … as an intra-group identity threat) increases the use of costly punishment within the in-group. …