“…Much of this research has been carried out in the USA and it is unknown whether the same processes operate in Britain. In addition, the work has mainly been carried out using small-sample case studies (Rubin et al, 1973;Roberts, 1975;Barona and Faykus, 1992), using experimental paradigms (Amira et al, 1977;Hendren and Routh, 1979;Matuszek and Oakland, 1979;Podell and Soodak, 1993) or, in one instance, an ecological study (Gelb and Mizokawa, 1986). No large-scale naturalistic studies have been carried out, to date, in a British setting.…”