It has been widely recognized that how languages behave, particularly under conditions of contact with other languages, depends on their context. Using the Ethnolinguistic Vitality framework, this chapter describes the demographics, linguistic attitudes and institutional supports for heritage languages, defining the concepts and illustrating them with examples from Toronto, the context in which the HLVC project is conducted. Demographic information includes population sizes, language shift rates, and history of settlement in Toronto. Status information includes both reflections on the status of heritage languages, as a whole, in Canada and labels attributed to the specific varieties. The institutional support section reports on the number of language classes available for each language. The chapter also includes discussion of language policy, particularly for education, and the demographics of the university where the research is centered, enabling other researchers to best consider what aspects of the project might need adjusting for adaptation in other contexts.

This chapter reports on trends of continuity and divergence within the heritage generations examined and between heritage and homeland varieties. It discusses the degrees of similarities between the varieties in terms of (a) rates of use of innovative forms and (b) conditioning factors in the constraint hierarchy. The three variables examined are voice onset time (VOT, n=8,909), case-marking on nouns and pronouns (CASE, n=9,661), and variable presence of subject pronouns (PRODROP, n=9,190), each in three or more languages. The similarity in rates and conditioning effects across generations for (PRODROP), examined in seven languages, particularly contrasts with findings for this variable in experimental paradigms. Similarly, findings of little simplification or overgeneralization of the case system in three languages stands in contrast to the outcomes of several previous studies. (VOT) shows a drift toward (but not arriving at) English-like values for only some of the languages examined. For each variable, models are presented and interpreted; a table then details which aspects of the analysis contribute to the interpretation of stability and of each type of variation.

This chapter draws cross-linguistic comparisons among the patterns reported in Chapter 5 for three linguistic variables that occur in at least three languages in the project: (VOT), (CASE), and (PRODROP). Conditioning factors, both linguistic and social, are discussed. Collapsing across rate and constraint hierarchy for each variable, we note any indication of change in either. Half the context we examine exhibit stability. Of the eight that indicate difference, half of these can be attributed to English (including both convergence and divergence). With few differences between homeland and heritage speakers to work with, we find few generalizations about what parts of the language, or which languages, change. We do see more change in one morphosyntactic variable, (CASE), than in the phonetic variable (VOT), but less in the other morphosyntactic variable (PRODROP).