The Role of Prosodic Structure in the L2 Acquisition of Spanish Stop Lenition.

This study tests the hypothesis that late first-language English / second-language Spanish learners (L1 English / L2 Spanish learners) acquire spirantization in stages according to the prosodic hierarchy (Zampini, 1997, 1998). In Spanish, voiced stops [b d g] surface after a pause or nasal stop, and continuants [β ð ɣ] surface postvocalically, among other contexts. We adopt an Optimality Theoretic analysis of the phenomenon that assumes that postvocalic continuants surface due to the ranking of prosodic positional faithfulness constraints below a markedness constraint that prohibits stops in postvocalic position. L1 English speakers are presumed to start with a ranking in which prosodic positional faithfulness outranks the markedness constraint. In line with the Gradual Learning Algorithm (Boersma and Hayes, 2001), gradual demotion of the relevant faithfulness constraints is predicted in L2 Spanish, extending the prosodic domain until continuants surface postvocalically across domains. A cross-section ...

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