Being "in" with the in-crowd: the effects of social exclusion and inclusion are enhanced by the perceived essentialism of ingroups and outgroups.
Bernstein MJ, Sacco DF, Young SG, Hugenberg K, Cook E. Being "in" with the in-crowd: the effects of social exclusion and inclusion are enhanced by the perceived essentialism of ingroups and outgroups. Pers Soc Psychol Bull. 2010 Aug; 36(8):999-1009.