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The influence of non-native language proficiency on speech perception perfomance
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. (Linnaeus Centre HEAD)
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. VU University Medical Center, Amsterdam, Netherlands. (Linnaeus Centre HEAD)
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuroscience. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Anaesthetics, Operations and Specialty Surgery Center, Department of Otorhinolaryngology in Linköping. Linnaeus Centre HEAD.
Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. Linköping University, The Swedish Institute for Disability Research. Linnaeus Centre HEAD.
2014 (English)In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 5, no 651Article in journal (Refereed) Published
Abstract [en]

The present study examined to what extent proficiency in a non-native language influences speech perception in noise. We explored how English proficiency affected native (Swedish) and non-native (English) speech perception in four speech reception threshold (SRT) conditions, including two energetic (stationary, fluctuating noise) and two informational (two-talker babble Swedish, two-talker babble English) maskers. Twenty-three normal-hearing native Swedish listeners participated, age between 28 and 64 years. The participants also performed standardized tests in English proficiency, non-verbal reasoning and working memory capacity. Our approach with focus on proficiency and the assessment of external as well as internal, listener-related factors allowed us to examine which variables explained intra- and interindividual differences in native and non-native speech perception performance. The main result was that in the non-native target, the level of English proficiency is a decisive factor for speech intelligibility in noise. High English proficiency improved performance in all four conditions when the target language was English. The informational maskers were interfering more with perception than energetic maskers, specifically in the non-native target. The study also confirmed that the SRTs were better when target language was native compared to non-native.

Place, publisher, year, edition, pages
Frontiers Research Foundation , 2014. Vol. 5, no 651
Keyword [en]
English proficiency; native; non-native; speech perception; informational masking; energetic masking; working memory
National Category
Psychology
Identifiers
URN: urn:nbn:se:liu:diva-109224DOI: 10.3389/fpsyg.2014.00651ISI: 000338777900001PubMedID: 25071630OAI: oai:DiVA.org:liu-109224DiVA: diva2:737200
Available from: 2014-08-12 Created: 2014-08-11 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Lost in Translation: Speech recognition and memory processes in native and non-native language perception
Open this publication in new window or tab >>Lost in Translation: Speech recognition and memory processes in native and non-native language perception
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Förlorat i Översättning : Taluppfattning och minnesprocesser på modersmål och ett andra språk
Abstract [en]

This thesis employed an integrated approach and investigated intra- and inter-individual differences relevant for normally hearing (NH) and hearing-impaired (HI) adults in native (Swedish) and non-native (English) languages in adverse listening conditions. The integrated approach encompassed the role of cognition as a focal point of interest as well as perceptualauditory and linguistic factors. Paper I examined the extent to which proficiency in a non-native language influenced native and non-native speech perception performance for NH listeners in noise maskers compared to native and non-native speech maskers. Working memory capacity in native and non-native languages and non-verbal intelligence were also assessed. The design of paper II was identical to that of paper I, however the participants in paper II had a hearingimpairment. The purpose of paper III was to assess how NH and HI listeners subjectively evaluated the perceived disturbance from the speech- and noise maskers in the native and nonnative languages. Paper IV examined how well native and non-native stories that were presented unmasked and masked with native and non-native speech were recalled by NH listeners. Paper IV further investigated the role of working memory capacity in the episodic long-term memory of story contents as well as proficiency in native and non-native languages. The results showed that generally, the speech maskers affected performance and perceived disturbance more than the noise maskers did. Regarding the non-native target language, interference from speech maskers in the dominant native language is taxing for speech perception performance, perceived disturbance and memory processes. However, large inter- individual variability between the listeners was observed. Part of this variability relates to non-native language proficiency. Perceptual and cognitive effort may hinder efficient long-term memory encoding, even when stimuli are appropriately identified at a perceptual level. A large working memory capacity (WMC) provides a better ability to suppress distractions and allocate processing resources to meet assigned objectives. The relatively large inter-individual differences in this thesis, require an individualized approach in clinical or educational settings when non-native persons or people with hearing impairment need to perceive and remember potentially vital information. Individua  differences in the very complex process of speech understanding and recall need to be further addressed by future studies. The relevance of cognitive factors and language proficiency provides opportunities for individuals who face difficulties to compensate using other abilities.

Abstract [sv]

Avhandlingens övergripande syfte var att genom ett integrerat tillvägagångssätt undersöka mellan- och inom-individuella skillnader relevanta för normalhörande och hörselskadade vuxna i svenska och engelska språket under ogynnsamma lyssningsförhållanden. Med kognitiva faktorer i fokus, omfattade det integrerade tillvägagångssättet också perceptuella-auditiva och lingvistiska faktorer. Studie I undersökte i vilken utsträckning färdigheter i engelska inverkade på taluppfattning av ett modersmål och ett andra språk som var maskerat med brus jämfört med störande tal på svenska och engelska. Normalhörande vuxna deltog. Arbetsminneskapacitet på svenska och engelska liksom icke-verbal intelligens bedömdes också i studien. Designen i studie II var identisk med designen i studie I, förutom att personer med hörselnedsättning ingick som deltagare. Syftet med studie III var att bedöma hur normalhörande personer och personer med hörselnedsättning subjektivt utvärderade den upplevda störningen från tal- och brus på ett modersmål och ett andra språk. Studie IV undersökte hur väl normalhörande deltagare kom ihåg berättelser på svenska och engelska som presenterades omaskerade eller med störande tal på svenska eller engelska. Studie IV undersökte vidare  arbetsminneskapacitet och episodiskt långtidsminne av berättelsernas innehåll liksom också färdighet i svenska och engelska språket. Resultaten visade att generellt var maskeringseffekten större vid störande tal jämfört med andra bruskällor både vad avser taluppfattning såväl som upplevd störning. Vad det gäller det engelska språket som talsignal, är störning från det svenska modersmålet påfrestande för taluppfattning, upplevd störning såväl som för minnesprocesser. Dock har stor inter- och intra-individuell variation mellan deltagarna observerats. En del av denna variation avser engelska språkfärdigheter. Perceptuell och kognitiv påfrestning kan minska möjligheten till att säkra långsiktiga minnesprocesser även om ett stimuli var korrekt identifierat på en perceptuell nivå. En god arbetsminneskapacitet kan ge en bättre förmåga att undertrycka en distraktion och därmed fördela processresurserna för att nå de uppställda målen. De relativt stora inter-individuella skillnaderna i denna avhandling gör det angeläget med en individualiserad  tillämpning, kliniskt eller inom utbildningsmässiga områden när personer med hörselnedsättning eller personer med ett annat modersmål behöver uppfatta eller minnas potentiellt viktig information. De individuella skillnader som ligger bakom taluppfattning och minnesförmåga behöver utforskas vidare. Goda kognitiva förmågor och språkfärdigheter ger möjligheter för individer som möter svårigheter till att kompensera genom att använda dessa förmågor.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2015. 59 p.
Series
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 655Studies from the Swedish Institute for Disability Research, ISSN 1650-1128 ; 74
Keyword
Speech perception, perceived disturbance, native, non-native, working memory, language proficiency, episodic long-term memory, Taluppfattning, upplevd störning, modersmål, ett andra språk, arbetsminne, språkfärdigheter, episodiskt långtids-minne
National Category
Social Sciences Interdisciplinary Clinical Medicine
Identifiers
urn:nbn:se:liu:diva-121034 (URN)10.3384/diss.diva-121034 (DOI)978-91-7685-972-8 (ISBN)
Public defence
2015-09-18, Key 1, Key building, Campus Valla, Linköping, 13:00 (Swedish)
Available from: 2015-09-03 Created: 2015-09-03 Last updated: 2016-12-20Bibliographically approved

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Kilman, LisaZekveld, AdrianaHällgren, MathiasRönnberg, Jerker

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