Abstract The present study investigates the effects of explicit and implicit pronunciation instruction on the production and perceived accentedness of three German fricatives — ç, ʃ, x — by English-speaking learners of German. Speech samples, collected following a pre-test/post-test/delayed-post-test design, were analyzed through acoustic analysis and listener-based accentedness ratings. Center of gravity was used to assess place of articulation, and perceived accentedness was rated on a nine-point Likert scale. Results indicate that learners who received explicit instruction produced fricatives with spectral characteristics more closely aligned with target articulations and were rated as less accented compared to learners who received implicit instruction. Findings also highlight how English orthography and learners’ first-language phonetic inventory can interfere with L2 pronunciation.
James M. Stratton (Mon,) studied this question.