The effects of social change within a group on membership preferences: to leave or not to leave?

Two studies examined immediate (Study 1) and long-term (Study 2) behavioral consequences of previously documented asymmetries in cognitive and evaluative reactions to change in majority and minority positions within a group. Study 1 found an overall decrease in preferences for group membership immediately following change, which was preceded by decategorization and devaluation of the group in response to loss, together with lack of categorization and positive evaluation in response to gain of the majority position. Study 2 found a gradual increase in preference to stay with (vs. exit) the group among former minorities with prolonged interactions that confirmed their gained majority position. A gradual increase in preference for group membership was paralleled with gradual increases in perception of both inclusion within and differentiation from the group.