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The Effects of Lexical Characteristics, Phonetic Categorization, and Vocabulary Size on Language Learners' Phonolexical Representations: A Lexical Friction Account
The Effects of Lexical Characteristics, Phonetic Categorization, and Vocabulary Size on La...
The Effects of Lexical Characteristics, Phonetic Categorization, and Vocabulary Size on Language Learners' Phonolexical Representations: A Lexical Friction Account

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103821
ISBN  
9798315702481
DDC  
401
저자명  
Rocca, Brian.
서명/저자  
The Effects of Lexical Characteristics, Phonetic Categorization, and Vocabulary Size on Language Learners Phonolexical Representations: A Lexical Friction Account
발행사항  
[Sl] : Indiana University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
289 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-11, Section: A.
주기사항  
Advisor: Darcy, Isabelle.
학위논문주기  
Thesis (Ph.D.)--Indiana University, 2025.
초록/해제  
요약When learning a second language (L2), encoding precisely which sounds belong in which words can be difficult-especially when words contain confusable sounds. Previous research has shown that learners who acquire more reliable phonetic categorization and a larger vocabulary size tend to encode sounds in words more precisely. However, limited research has investigated how lexical characteristics like phonological neighborhood density (PND) and lexical frequency impact the precision of encoding. Most research either ignores these variables or tries to control stimuli so that they will not impact the results.This dissertation builds on previous research by investigating how categorization and vocabulary size modulate the encoding of a confusable vowel contrast; however, it also expands into new territory by selecting auditory lexical decision task items that vary in PND and lexical frequency. Words that require more effort to process, such as low frequency and high PND words, were predicted to be encoded more precisely because miscommunication is more likely to occur if these words are mispronounced/misperceived. Miscommunication is a form of friction which can highlight phonetic forms and facilitate encoding.Sixty native Korean and twenty native English speakers completed three tasks: an auditory lexical decision task, an /ɛ/-/ae/ categorization task, and vocabulary size test. Logistic regression analyses of lexical decision task responses show that participants with more reliable categorization were more accurate overall, but better categorization was more beneficial for responses to /ae/ items. Second, participants were more accurate on items with lower frequency and higher PND, but the effects of lexical characteristics were strongest for participants with less reliable vowel categorization. Third, the effect of PND was modulated by vocabulary size and lexical frequency so that the effect of PND was stronger for participants with a larger vocabulary, but the effect of PND was mitigated in high frequency words. These results align with previous studies showing that creating precise representations is modulated by perception abilities and vocabulary size. This dissertation advances our understanding of language learning by showing that both PND and lexical frequency are also variables that impact the precision of phonolexical encoding. These results align with the idea that friction during communication can be a beneficial form of feedback that helps learners encode confusable sounds into representations.
일반주제명  
Linguistics
일반주제명  
English as a second language
일반주제명  
Language
키워드  
L2 lexicon
키워드  
L2 phonetics
키워드  
L2 phonology
키워드  
Phonological neighbors
키워드  
Second language acquisition
기타저자  
Indiana University Second Language Studies
기본자료저록  
Dissertations Abstracts International. 86-11A.
전자적 위치 및 접속  
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MARC

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■1001  ▼aRocca,  Brian.▼0(orcid)0000-0003-1961-9500
■24510▼aThe  Effects  of  Lexical  Characteristics,  Phonetic  Categorization,  and  Vocabulary  Size  on  Language  Learners'  Phonolexical  Representations:  A  Lexical  Friction  Account
■260    ▼a[Sl]▼bIndiana  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a289  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-11,  Section:  A.
■500    ▼aAdvisor:  Darcy,  Isabelle.
■5021  ▼aThesis  (Ph.D.)--Indiana  University,  2025.
■520    ▼aWhen  learning  a  second  language  (L2),  encoding  precisely  which  sounds  belong  in  which  words  can  be  difficult-especially  when  words  contain  confusable  sounds.  Previous  research  has  shown  that  learners  who  acquire  more  reliable  phonetic  categorization  and  a  larger  vocabulary  size  tend  to  encode  sounds  in  words  more  precisely.  However,  limited  research  has  investigated  how  lexical  characteristics  like  phonological  neighborhood  density  (PND)  and  lexical  frequency  impact  the  precision  of  encoding.  Most  research  either  ignores  these  variables  or  tries  to  control  stimuli  so  that  they  will  not  impact  the  results.This  dissertation  builds  on  previous  research  by  investigating  how  categorization  and  vocabulary  size  modulate  the  encoding  of  a  confusable  vowel  contrast;  however,  it  also  expands  into  new  territory  by  selecting  auditory  lexical  decision  task  items  that  vary  in  PND  and  lexical  frequency.  Words  that  require  more  effort  to  process,  such  as  low  frequency  and  high  PND  words,  were  predicted  to  be  encoded  more  precisely  because  miscommunication  is  more  likely  to  occur  if  these  words  are  mispronounced/misperceived.  Miscommunication  is  a  form  of  friction  which  can  highlight  phonetic  forms  and  facilitate  encoding.Sixty  native  Korean  and  twenty  native  English  speakers  completed  three  tasks:  an  auditory  lexical  decision  task,  an  /ɛ/-/ae/  categorization  task,  and  vocabulary  size  test.  Logistic  regression  analyses  of  lexical  decision  task  responses  show  that  participants  with  more  reliable  categorization  were  more  accurate  overall,  but  better  categorization  was  more  beneficial  for  responses  to  /ae/  items.  Second,  participants  were  more  accurate  on  items  with  lower  frequency  and  higher  PND,  but  the  effects  of  lexical  characteristics  were  strongest  for  participants  with  less  reliable  vowel  categorization.  Third,  the  effect  of  PND  was  modulated  by  vocabulary  size  and  lexical  frequency  so  that  the  effect  of  PND  was  stronger  for  participants  with  a  larger  vocabulary,  but  the  effect  of  PND  was  mitigated  in  high  frequency  words.  These  results  align  with  previous  studies  showing  that  creating  precise  representations  is  modulated  by  perception  abilities  and  vocabulary  size.  This  dissertation  advances  our  understanding  of  language  learning  by  showing  that  both  PND  and  lexical  frequency  are  also  variables  that  impact  the  precision  of  phonolexical  encoding.  These  results  align  with  the  idea  that  friction  during  communication  can  be  a  beneficial  form  of  feedback  that  helps  learners  encode  confusable  sounds  into  representations.
■590    ▼aSchool  code:  0093.
■650  4▼aLinguistics
■650  4▼aEnglish  as  a  second  language
■650  4▼aLanguage
■653    ▼aL2  lexicon
■653    ▼aL2  phonetics
■653    ▼aL2  phonology
■653    ▼aPhonological  neighbors
■653    ▼aSecond  language  acquisition
■690    ▼a0290
■690    ▼a0441
■690    ▼a0679
■71020▼aIndiana  University▼bSecond  Language  Studies.
■7730  ▼tDissertations  Abstracts  International▼g86-11A.
■790    ▼a0093
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358251▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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