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Title: An ERP study of effects of regularity and consistency in delayed naming and lexicality judgment in a logographic writing system
Authors: Yum, YN
Law, SP
Su, IF
Lau, KYD
Mo, KN
Issue Date: 14-Apr-2014
Source: Frontiers in psychology, 14 Apr. 2014, v. 5, 315, p. 1-12
Abstract: Phonological access is an important component in theories and models of word reading. However, phonological regularity and consistency effects are not clearly separable in alphabetic writing systems. We investigated these effects in Chinese, where the two variables are operationally distinct. In this orthographic system, regularity is defined as the congruence between the pronunciation of a complex character (or phonogram), and that of its phonetic radical, while phonological consistency indexes the proportion of orthographic neighbors that share the same pronunciation as the phonogram. In the current investigation, regularity and consistency were contrasted in an event-related potential (ERP) study using a lexical decision (LD) task and a delayed naming (DN) task with native Chinese readers. ERP results showed that effects of regularity occurred early after stimulus onset and were long-lasting. Regular characters elicited larger N170, smaller P200, and larger N400 compared to irregular characters. In contrast, significant effects of consistency were only seen at the P200 and consistent characters showed a greater P200 than inconsistent characters. Thus, both the time course and the direction of the effects indicated that regularity and consistency operated under different mechanisms and were distinct constructs. Additionally, both of these phonological effects were only found in the DN task and absent in LD, suggesting that phonological access was non-obligatory for LD. The study demonstrated cross-language variability in how phonological information was accessed from print and how task demands could influence this process.
Keywords: Chinese
Delayed naming
Event-related potential (ERP)
Lexical decision
Phonological consistency
Phonological regularity
Publisher: Frontiers Media SA
Journal: Frontiers in Psychology 
ISSN: 1664-1078
DOI: 10.3389/fpsyg.2014.00315
Rights: Copyright © 2014 Yum, Law, Su, Lau and Mo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY) (https://creativecommons.org/licenses/by/3.0/). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
The following publication Yum YN, Law S-P, Su I-F, Lau K-YD and Mo KN (2014) An ERP study of effects of regularity and consistency in delayed naming and lexicality judgment in a logographic writing system. Front. Psychol. 5:315,1-12 is available at https://dx.doi.org/10.3389/fpsyg.2014.00315
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