Before revision: measuring people's ability to speak and understand another language (usually community based, not school based) (multilingualism) studying people's attitudes about different languages (Rensch 1993) evaluating the differences and similarities in speech of communities that speak related speech forms, noting comprehension or collecting details of linguistic form (dialectology) (Labov1982, Backstrom 1992, Egland 1978) Labov, William.
After revision: measuring people's ability to speak and understand another language (usually community based, not school based) (multilingualism) studying people's attitudes about different languages (Rensch 1993) evaluating the differences and similarities in speech of communities that speak related speech forms, noting comprehension or collecting details of linguistic form (dialectology) Labov, William.