Metrical Encoding in Adults Who Do and Do Not Stutter

2015 ◽  
Vol 58 (3) ◽  
pp. 601-621 ◽  
Author(s):  
Geoffrey A. Coalson ◽  
Courtney T. Byrd
Keyword(s):  
Speech Production ◽  
Initial Stress ◽  
Time Course ◽  
Phonological Encoding ◽  
Group Effect ◽  
Additional Time ◽  
Syllable Boundary ◽  
Speech Planning ◽  
Phoneme Monitoring ◽  
Speed And Accuracy

Purpose The purpose of this study was to explore metrical aspects of phonological encoding (i.e., stress and syllable boundary assignment) in adults who do and do not stutter (AWS and AWNS, respectively). Method Participants monitored nonwords for target sounds during silent phoneme monitoring tasks across two distinct experiments. For Experiment 1, the 22 participants (11 AWNS, 11 AWS) silently monitored target phonemes in nonwords with initial stress. For Experiment 2, an additional cohort of 22 participants (11 AWNS, 11 AWS) silently monitored phonemes in nonwords with noninitial stress. Results In Experiment 1, AWNS and AWS silently monitored target phonemes in initial stress stimuli with similar speed and accuracy. In Experiment 2, AWS demonstrated a within-group effect that was not present for AWNS. They required additional time when monitoring phonemes immediately following syllable boundary assignment in stimuli with noninitial stress. There was also a between-groups effect, with AWS exhibiting significantly greater errors identifying phonemes in nonwords with noninitial stress than AWNS. Conclusions Findings suggest metrical properties may affect the time course of phonological encoding in AWS in a manner distinct from AWNS. Specifically, in the absence of initial stress, metrical encoding of the syllable boundary may delay speech planning in AWS and contribute to breakdowns in fluent speech production.

Spoken-word production in Korean: A non-word masked priming and phonological Stroop task investigation

2018 ◽  
Vol 72 (4) ◽  
pp. 901-912 ◽  
Author(s):  
Jeong-Im Han ◽  
Rinus G Verdonschot
Keyword(s):  
Speech Production ◽  
Stroop Task ◽  
Masked Priming ◽  
Spoken Word ◽  
Phonological Encoding ◽  
Spoken Word Production ◽  
Production Studies ◽  
Priming Task ◽  
Speech Planning ◽  
Phonological Unit

Speech production studies have shown that phonological unit initially used to fill the metrical frame during phonological encoding is language specific, that is, a phoneme for English and Dutch, an atonal syllable for Mandarin Chinese, and a mora for Japanese. However, only a few studies chronometrically investigated speech production in Korean, and they obtained mixed results. Korean is particularly interesting as there might be both phonemic and syllabic influences during phonological encoding. The purpose of this study is to further examine the initial phonological preparation unit in Korean, employing a masked priming task (Experiment 1) and a phonological Stroop task (Experiment 2). The results showed that significant onset (and onset-plus, that is, consonant–vowel [CV]) effects were found in both experiments, but there was no compelling evidence for a prominent role for the syllable. When the prime words were presented in three different forms related to the targets, namely, without any change, with re-syllabified codas, and with nasalised codas, there were no significant differences in facilitation among the three forms. Alternatively, it is also possible that participants may not have had sufficient time to process the primes up to the point that re-syllabification or nasalisation could have been carried out. In addition, the results of a Stroop task demonstrated that the onset phoneme effect was not driven by any orthographic influence. These findings suggest that the onset segment and not the syllable is the initial (or proximate) phonological unit used in the segment-to-frame encoding process during speech planning in Korean.

Stable preview difficulty effects in reading with an improved variant of the boundary paradigm

2019 ◽  
Vol 72 (7) ◽  
pp. 1632-1645 ◽  
Author(s):  
Sarah Risse ◽  
Stefan Seelig
Keyword(s):  
Target Word ◽  
Word Processing ◽  
Time Course ◽  
Movement Control ◽  
Boundary Current ◽  
Additional Time ◽  
Sentence Reading ◽  
Duration Distribution ◽  
The Right ◽  
Boundary Paradigm

Using gaze-contingent display changes in the boundary paradigm during sentence reading, it has recently been shown that parafoveal word-processing difficulties affect fixations on words to the right of the boundary. Current interpretations of this post-boundary preview difficulty effect range from delayed parafoveal-on-foveal effects in parallel word-processing models to forced fixations in serial word-processing models. However, these findings are based on an experimental design that, while allowing to isolate preview difficulty effects, might have established a bias with respect to asymmetries in parafoveal preview benefit for high-frequent and low-frequent target words. Here, we present a revision of this paradigm varying the preview’s lexical frequency and keeping the target word constant. We found substantial effects of the preview difficulty in fixation durations after the boundary confirming that preview processing affects the oculomotor decisions not only via trans-saccadic integration of preview and target word information. An additional time-course analysis showed that the preview difficulty effect was significant across the full fixation duration distribution on the target word without any evidence on the pretarget word before the boundary. We discuss implications of the accumulating evidence of post-boundary preview difficulty effects for models of eye movement control during reading.

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