We argue that an evaluation of morphosyntactic convergence between Picard and French must consider multiple variables, comparing rates of (co-)occurrence of Picard-like and French-like variants and linguistic constraints across the two varieties. Contemporary oral data from interviews with Picard–French bilinguals and French monolinguals were analyzed and contrasted with older Picard data. While future temporal reference in Picard and in French appear similar based on frequency, linguistic conditioning reveals differences across varieties and over time. Auxiliary selection displays clearer Picard–French distinctions, especially when considering the effect of linguistic factors. The intersection of variables shows that the differences between Picard and French are qualitative and not simply quantitative. In the context of the debate over the status of Northern France's obsolescent varieties, we provide empirical evidence for a mental grammar in Picard distinct from that of French, and show the relevance of comparative sociolinguistics for language planning.
