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PLoS One ; 12(7): e0181709, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28738093


This study investigates whether listeners' experience with a second language learned later in life affects their use of fundamental frequency (F0) as a cue to word boundaries in the segmentation of an artificial language (AL), particularly when the cues to word boundaries conflict between the first language (L1) and second language (L2). F0 signals phrase-final (and thus word-final) boundaries in French but word-initial boundaries in English. Participants were functionally monolingual French listeners, functionally monolingual English listeners, bilingual L1-English L2-French listeners, and bilingual L1-French L2-English listeners. They completed the AL-segmentation task with F0 signaling word-final boundaries or without prosodic cues to word boundaries (monolingual groups only). After listening to the AL, participants completed a forced-choice word-identification task in which the foils were either non-words or part-words. The results show that the monolingual French listeners, but not the monolingual English listeners, performed better in the presence of F0 cues than in the absence of such cues. Moreover, bilingual status modulated listeners' use of F0 cues to word-final boundaries, with bilingual French listeners performing less accurately than monolingual French listeners on both word types but with bilingual English listeners performing more accurately than monolingual English listeners on non-words. These findings not only confirm that speech segmentation is modulated by the L1, but also newly demonstrate that listeners' experience with the L2 (French or English) affects their use of F0 cues in speech segmentation. This suggests that listeners' use of prosodic cues to word boundaries is adaptive and non-selective, and can change as a function of language experience.

Multilinguismo , Percepção da Fala/fisiologia , Fala/fisiologia , Estimulação Acústica/métodos , Adulto , Percepção Auditiva/fisiologia , Sinais (Psicologia) , Feminino , Humanos , Idioma , Masculino , Fonética , Espectrografia do Som/métodos , Acústica da Fala , Adulto Jovem
Ment Lex ; 10(3): 413-434, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-29142611


Recent research suggests that visually-presented words are initially morphologically segmented whenever the letter-string can be exhaustively assigned to existing morphological representations, but not when an exhaustive parse is unavailable; e.g., priming is observed for both hunter→HUNT and brother →BROTH, but not for brothel→BROTH. Few studies have investigated whether this pattern extends to novel complex words, and the results to date (all from novel suffixed words) are mixed. In the current study, we examine whether novel compounds (drugrack→RACK) yield morphological priming which is dissociable from that in novel pseudoembedded words (slegrack→RACK). Using masked priming, we find significant and comparable priming in reaction times for word-final elements of both novel compounds and novel pseudoembedded words. Using overt priming, however, we find greater priming effects (in both reaction times and N400 amplitudes) for novel compounds compared to novel pseudoembedded words. These results are consistent with models assuming across-the-board activation of putative constituents, while also suggesting that morpheme activation may persevere despite the lack of an exhaustive morpheme-based parse when an exhaustive monomorphemic analysis is also unavailable. These findings highlight the critical role of the lexical status of the pseudoembedded prime in dissociating morphological and orthographic priming.