“…Such behaviours range from a biased evaluation of one's ingroup team over the outgroup team (Wann & Branscombe, 1995), to name calling and singing denigrating songs about the outgroup team (Scheepers, Spears, Doosje, & Manstead, 2003, and even to behaviours such as overt aggression, hooliganism, and riots observed, for example, in football/soccer (Stott, Adang, Livingstone, & Schreiber, 2007;Stott, Hutchison, & Drury, 2001) and in ice hockey (Harrell, 1981). Groups of fans also differ in which type of derogatory behaviour they encourage their members to engage in, with some groups of fans endorsing norms in favour of derogatory behaviours more than others (e.g., Franco & Maass, 1996;Stott et al, 2001Stott et al, , 2007.…”