A b stra c tThis study examines whether the production of words with two phonological variants involves single or multiple lexical phonological representations. Three production experiments investigated the roles of the relative frequencies of the two pronunciation variants of French words with schwa: the schwa variant (e.g., [fanetR]) and the reduced variant (e.g., [fnetR]). In two naming tasks and in a symbol-word association learning task, variants with higher relative frequencies were produced faster. This suggests that the production lexicon keeps a frequency count for each variant and hence that schwa words are represented in the production lexicon with two different lexemes. In addition, the advantage for schwa variants over reduced variants in the naming tasks but not in the learning task and the absence of a variant relative frequency effect for schwa variants produced in isolation support the hypothesis that context affects the variants' lexical activation and modulates the effect of variant relative frequency.
2In tro d u ctio n Many words in connected speech appear in a non-canonical form (e.g., Johnson 2004).Despite this fact, it is only during the last two decades that psycholinguistic studies of speech comprehension have gone beyond studying canonical speech and have begun to examine how listeners recognize non-canonical variants of words. Findings on assimilation (e.g., Gaskell & Marslen-Wilson, 1996 Snoeren, Segui & Halle, 2008), nasal flap (e.g., Ranbom & Connine, 2007) and schwa deletion (e.g., Connine, Ranbom & Patterson, 2008;Kuijpers, van Donselaar & Cutler, 1996;Racine & Grosjean, 2000, 2005Spinelli & Gros-Balthazard, 2007) have provided a deeper understanding of the recognition of this everyday form of speech. For production, in contrast, a similar shift in research has not yet taken place. Our current knowledge of how words are represented in the lexicon and encoded during production comes from experiments using canonical word forms only. What we know about phonological variants comes essentially from corpus analyses and acoustic studies. Although recent corpus studies have started to address these questions (see for instance Bell, Brenier, Gregory, Girand & Jurafsky, 2009), so far they have only provided little and circumstantial information about the nature of the lexical representations of words with several variants and about the mechanisms (including their time course) underlying the production of such variants. For more direct information, on-line experimental data are needed. The aim of this work is to provide such data.Most models of speech production and comprehension can be situated along a continuum with respect to their assumptions about the mental lexicon. Traditional psycholinguistic models are heavily influenced by generative grammar (Chomsky & Halle, 1968), in which words are generally assumed to have only one lexical representation, with 3 their other pronunciation variants being computed by means of phonological or phonetic rules.For instance, many authors assume that F...