“…For instance, reports of acoustic studies suggest that pre-stress schwa deletion in English (e.g., Davidson, 2006) is a gradient phonetic process. By contrast, articulatory measures suggest that Dutch schwa insertion is better explained by a categorical than a gradient process, and thus is likely to arise at an earlier phonological processing level (Warner, Jongman, Cutler, & Mücke, 2001). Most relevant for us, both acoustic and articulatory evidence suggest that the alternation between schwa and reduced variants in French is categorical rather than gradient, suggesting a phonological or lexical rather than phonetic locus (Bürki, Ernestus, Gendrot, Fougeron, & Frauenfelder, submitted for publication;Bürki, Fougeron, Veaux, & Frauenfelder, 2009;Côté & Morrison, 2007).…”