This study looked in detail at the management of language diversity among the descendants of Turkish immigrants and their families of origin in France, Germany and the Netherlands. I took a sociological approach to the use of self-reported language proficiency in early adulthood as an indicator of linguistic self-esteem (Bourdieu, 1991; Fishman 1991; Brizić, 2006; Norton, 2006). Approaching reported language outcomes as a consequence of collective processes, I aimed to understand the extent to which linguistic self-esteem in each of the three countries was associated to other variables, both linguistic and non-linguistic. The data for the study were drawn from The Integration of European Second Generation (TIES), I first analyzed respondents’ linguistic starting point through indicators of parents’ linguistic capital and the respondents’ childhood language environment; second, I assessed current language dynamics, through language uses in the family; and third, I used other variables as indirect indicators of individuals’ language contact opportunities, specifically those related to social background and to the city where individuals’ grew up and currently live, with a particular focus on school experiences. ; Esta tese pretendeu estudar a gestão da diversidade linguística entre os descendentes de imigrantes turcos e suas famílias de origem em França, Alemanha e Holanda. A partir duma abordagem sociológica, utilizei o conceito de auto-relato da proficiência linguística em idade adulta como um indicador de auto-estima linguística (Bourdieu, 1991; Fishman 1991; Brizić, 2006; Norton, 2006). Abordando os resultados obtidos como consequência de processos colectivos, pretendi analisar a forma como a auto-estima linguística em cada um dos três países se encontrava associada a outros factores, sejam eles linguísticos e não-linguísticos. Utilizandos os dados do inquérito The Integration of European Second Generation (TIES), analisei, numa primeira etapa, o ponto de partida linguístico dos descendentes dos imigrantes ...