A bstraci Research on intergroup relations by Tafel and others (e.g. Tafel et al., 1971; Billig and Taifel, 1973) has indicated that there are two opposing norms governing intergroup behaviour-a norm for discrimination and a norm for fairness. The behaviour that results from social categorization represents a compromise between these opposing norms. The norm for discrimination is explained in terms of social comparison processes and the need to achieve a positive ingroup identity (Turner, 1975). Along similar lines, another study suggests that discrimination is strongest on the part of the self-perceived underdog in order to assert its independent and individual identity (Branthwaite and Jones, 197.5