Data from the 1996 New Zealand Census on ethnicity in Auckland Urban
and European groups, and that most of the European groups--along with the "host society," the New Zealand Europeans-were not spatially exposed to members of the Polynesian and Asian groups.After decades of debate on the nature of residential segregation and how to measure it, research has tended to lapse into a degree of theoretical, methodological, and even terminological uncertainty, associated with the promotion of a variety of different definitions and measures (Massey and Denton 1988, p. 282). Consistency and comparability certainly, and potentially the validity of the research area itself, all suffer as a result. None of this is satisfactory at a time of burgeoning interest in the social dynamics of plural, ethnically heterogeneous cities (Grill0 2000) or EthniCities (Roseman, Laux, and Thieme 1996). In particular, established relationships between ethnic residential patterns and social distance from the host society, through the operation of the housing market, bear on issues of social discrimination and exclusion, and of economic disadvantage, as well as positive reasons for ethnic group segregation associated with retention of cultural identity. Hence the continuing need, not only to continue the debate about theories of the nature and dynamics of ethnic group concentration in urban areas, but also to develop methodologies that can accurately map and describe the social geographies of ethnic groups in light of developing theory. This paper examines several major aspects of the methodological debate, looking especially at the indexes of segregation and isolation and at a new, threshold