PETER BURKE’s research while affiliated with University of California, Riverside and other places

... Increasingly, we live in complex societies affording many possible dimensions of categorisation (Deaux and Burke, 2010). Most theories (e.g. the self-categorisation theory of Turner and others, 1987) and research in this domain have focused on situations in which people use a single dimension to categorise (Blanz and others, 2005;Crisp and Hewstone, 2006;Smith, 2006). 1 While people do sometimes use just one dimension (such as gender) to categorise in a complex setting (Oakes and others, 1994), there is evidence that people can and often do use more than one dimension simultaneously (McGarty, 2006;Stangor and others, 1992). ...

Reference:

Children's Use of Multiple Categorisations in Practice in a Multicultural Setting