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Heritage speakers—bilinguals who acquire minority languages naturalistically in infancy but are typically majority-language-dominant in adulthood—generally acquire grammars that differ systematically from the baseline input received in childhood. Yet not all areas diverge equally; understanding what characterizes divergence or resilience of a given feature is crucial to understanding heritage language acquisition. In this realm, we investigate the discourse-conditioned non-canonical word orders that mark information focus in Spanish. Focus bears the hallmarks of structures that diverge from the baseline, yet the evidence is mixed. We use an offline forced-choice task and an online self-paced reading task to compare heritage speakers’ judgments and processing to the baseline’s, and we find, echoing recent work, that the heritage speakers largely resemble baseline speakers. We interpret this convergence with reference to seven factors potentially affecting heritage language acquisition and identify one hypothesis—that focus facilitates processing due to its structural and pragmatic salience—as a promising explanation.
