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Niclas AbrahamssonProfessor

Om mig

Min forskning och undervisning rör språkstrukturella (särskilt fonetiska och fonologiska), psykolingvistiska, neurokognitiva och psykologiska aspekter av andraspråksinlärning och tvåspråkighet. Ett återkommande tema är ålderns inverkan på språkinlärning och språkförlust samt huruvida skillnader mellan barn och vuxna kan knytas till hjärnans mognad och s.k. kritiska perioder.

Min aktuella forskning inkluderar (1) ålderseffekter vs. tvåspråkighetseffekter, (2) det procedurala/implicita resp. det deklarativa/explicita minnets roll för grammatisk inlärning och processning på nästan infödd nivå, och (3) infödda lyssnarares perception av icke-infött uttal.

Sedan 2010 är jag professor i svenska som andraspråk och fr.o.m. 1 juli 2018 föreståndare för Centrum för tvåspråkighetsforskning.

Utbildning

  • 2001: Fil.dr i tvåspråkighet, Stockholms universitet (Centrum för tvåspråkighetsforskning). Avhandling: “Acquiring L2 Syllable Margins. Studies on the Simplification of Onsets and Codas in Interlanguage Phonology.”
  • 1993: Fil.kand., Stockholms universitet (allmän språkvetenskap, fonetik, psykologi).

Anställningar etc.

  • 2010-nu: Professor i svenska som andraspråk, Centrum för tvåspråkighetsforskning/Inst f svenska och flerspråkighet, Stockholms universitet.
  • 2006-2010: Universitetslektor i tvåspråkighet, Centrum för tvåspråkighetsforskning, Stockholms universitet.
  • 2006: Docent
  • 2002-2005: Forskarassistenttjänst (‘foass’), Centrum för tvåspråkighetsforskning, Stockholms universitet.
  • 2001: Projektanställd forskare
  • 1996-2001: Doktorandtjänst, Centrum för tvåspråkighetsforskning, Stockholms universitet.
  • 1990-1995: Forskningsassistent i olika projekt om tvåspråkig utveckling, andraspråksinlärning och tredjespråksinlärning vid Inst f lingvistik och Centrum för tvåspråkighetsforskning, Stockholms universitet, under under ledning av Björn Hammarberg, Kenneth Hyltenstam, och Åke Viberg.

Undervisning

  • 1994-nu (årligen/flera ggr per år sedan 1998): kurser i andraspråksinlärning, tvåspråkig utveckling och svenska som andraspråk på grundnivå (inkl. lärarutbildning), avancerad nivå och doktorandnivå, Stockholms universitet.
  • 2009-nu (årligen/flera ggr per år): kurser i psyko- och neurolingvistiska perspektiv på andraspråksinlärning och tvåspråkighet på grundnivå (inkl. lärarutbildning), avancerad nivå och doktorandnivå, Stockholms universitet.
  • 1997-nu: Gästföreläsningar om andraspråksinlärning, tvåspråkighet, psykolingvistik, andraspråksfonologi samt forskningsmetodik på utbildningar i lingvistik, logopedi, moderna språk och svenska som andraspråk på olika nivåer vid diverse svenska och nordiska universitet.

Handledning av doktorander

Huvudhandledare

  • Katrin Stölten (Stockholms universitet, Centret), disp. 2013: “The Effects of Age of Onset on VOT in L2 Acquisition and L1 Attrition. A Study of the Speech Production and Perception of Advanced Spanish-Swedish Bilinguals”
  • Memet Aktürk-Drake (Stockholms universitet, Centret), disp. 2015: “Phonological Adoption through Bilingual Borrowing. Comparing Elite Bilinguals and Heritage Bilinguals”
  • Helena Smeds (Stockholms universitet, Centret), disp. 2015: “Blindness and Second Language Acquisition. Studies of Cognitive Advantage in Blind L1 and L2 Speakers”
  • Tatiana Antontchik (Stockholms universitet, Centret), pågående: “Acquisition of Compounding in Swedish as a Second Language”
  • Marta Quevedo Rodriguez (Stockholms universitet, Centret), pågående: “Effects of Language-dependent Memory in Bilinguals”
  • Maryann Su Lin Tan (Stockholms universitet, Centret), pågående: “Lexically Guided Perceptual Learning of Foreign Accented Swedish and its Positional Transfer”

Bihandledare

  • Emanuel Bylund (Stockholms universitet, Centret), disp. 2008: “Age Differences in First Language Attrition. A Maturational Constraints Perspective”
  • Alejandra Donoso (Stockholms universitet, Romanska och klassiska institutionen), disp. 2016: “Expresiones de movimiento en español como segunda lengua y como lengua heredada. Conceptualización y entrega del Camino, Manera y Base”
  • Raphaël Domange (Stockholms universitet, Engelska institutionen), disp. 2023: “The Vowels of Delhi English. Three Studies in Sociophonetics”
  • Johanna Einarsson (Stockholms universitet, Inst f svenska och flerspråkighet), pågående: “Intonation hos L2-talare av svenska”
  • Anna Persson (Stockholms universitet, Inst f svenska och flerspråkighet), pågående: “Språklig anpassning till andraspråkstal”

Forskning

Forskningsprojekt

  • 2020-2021: “Flerspråkighet och ordförråd: en meta-analytisk ansats” (medsökanden), proj. 200-0676, Byggmästare Olle Engqvists Stiftelse (huvudsökanden/projektledare: E. Bylund).
  • 2017-2019: “A Compensatory Role for Explicit/Declarative Memory in Grammatical Processing: A Combined Latency, ERP, and tDCS Study of Nativelike Second Language Acquisition” (huvudsökanden/projektledare), proj. 2016-01630, Vetenskapsrådet (medsökanden: E. Bylund). [Läs mer]
  • 2017: “Native Listeners’ Perception of Near-native Speech: The Roles of Expectancy Violations, Stereotype Incongruity, and Reconstructive Memory” (projektledare), delvis finansierat genom medel från (i) IDO-stiftelsen för språkforskning till Hellmut Röhnischs minne, och (ii) del av proj. SAB16-0051:1, Riksbankens Jubileumsfond (medarbetare: A. Persson).
  • 2017: “Age, Maturational Constraints and the Critical Period for Language Acquisition. What have we Learnt from Very Advanced Second Language Users – and What Remains to be Learnt?” (RJ Sabbatical, hela 2017), proj. SAB16-0051:1, Riksbankens Jubileumsfond.
  • 2015-2020: “Bilingualism and Second Languages”, ledande forskningsområde vid Stockholms universitet, 2015-2020 (koordinator och författare av ansökan), sexårigt särskilt stöd till fem institutioner/enheter, Stockholms universitet, Humanistiska fakulteten.
  • 2010-2012: “Non-nativelike Ultimate Attainment in a Second Language: An Effect of Age of Onset or of Bilingualism?” (projektledare; medarbetare: E. Bylund, K. Hyltenstam), delprojekt inom forskningsprogrammet “Avancerad andraspråksanvändning (AAA)”, 2006-2012, proj. M2005-0459, Riksbankens Jubileumsfond (programkoordinator: K. Hyltenstam).
  • 2008-2010: “Perceptual Compensation in Blind Second Language Learners” (huvudsökanden/projektledare), proj. 2007-1679, Vetenskapsrådet (medsökanden: H. Smeds).
  • 2006-2008: “The Role of Age and Language Aptitude for High-level L2 Proficiency” (projektledare), delprojekt inom forskningsprogrammet “Avancerad andraspråksanvändning (AAA)”, 2006-2012, proj. M2005-0459, Riksbankens Jubileumsfond (programkoordinator: K. Hyltenstam).
  • 2005-2007: “First Language Attrition in Advanced Second Language Speakers” (huvudsökanden/projektledare), proj. 421-2004-1975, Vetenskapsrådet (medsökanden: K. Hyltenstam, E. Bylund).
  • 2000-2002: “Age of Onset and Ultimate Attainment in Second Language Acquisition” (medsökanden/projektledarroll), proj. 1999-0383:01, Riksbankens Jubileumsfond (huvudsökanden/projektledare: K. Hyltenstam).
  • 1994-1996: “Age of Onset and Ultimate Attainment in Second Language Acquisition”, internfinansierat, Centrum för tvåspråkighetsforskning, Stockholms universitet (projektledare: K. Hyltenstam)
  • 1990-1995: Forskningsassistent i ett flertal forskningsprojekt om tvåspråkig utveckling, andraspråksinlärning och tredjespråksinlärning, Inst f lingvistik och Centrum för tvåspråkighetsforskning, Stockholms universitet , under ledning av Björn Hammarberg, Kenneth Hyltenstam och Åke Viberg.

Avhandlingsprojekt

  • 1996-2001: “Acquiring L2 Syllable Margins. Studies on the Simplification of Onsets and Codas in Interlanguage Phonology.” (handledare: B. Hammarberg)

Publikationer

I urval från Stockholms universitets publikationsdatabas

  • Does bilingualism come with linguistic costs? A meta-analytic review of the bilingual lexical deficit

    2023. Emanuel Bylund (et al.). Psychonomic Bulletin & Review 30, 897-913

    Artikel

    A series of recent studies have shown that the once-assumed cognitive advantage of bilingualism finds little support in the evidence available to date. Surprisingly, however, the view that bilingualism incurs linguistic costs (the so-called lexical deficit) has not yet been subjected to the same degree of scrutiny, despite its centrality for our understanding of the human capacity for language. The current study implemented a comprehensive meta-analysis to address this gap. By analyzing 478 effect sizes from 130 studies on expressive vocabulary, we found that observed lexical deficits could not be attributed to bilingualism: Simultaneous bilinguals (who acquired both languages from birth) did not exhibit any lexical deficit, nor did sequential bilinguals (who acquired one language from birth and a second language after that) when tested in their mother tongue. Instead, systematic evidence for a lexical deficit was found among sequential bilinguals when tested in their second language, and more so for late than for early second language learners. This result suggests that a lexical deficit may be a phenomenon of second language acquisition rather than bilingualism per se.

    Läs mer om Does bilingualism come with linguistic costs? A meta-analytic review of the bilingual lexical deficit

  • Is It Time to Reconsider the ‘Gold Standard’ for Nativelikeness in ERP Studies on Grammatical Processing in a Second Language? A Critical Assessment Based on Qualitative Individual Differences 

    2022. Dominik Freunberger, Emanuel Bylund, Niclas Abrahamsson. Applied Linguistics 43 (3), 433-452

    Artikel

    In most event-related potential (ERP) studies on the second language (L2) processing, the native speaker (L1) control group’s grand average ERP pattern serves as the ‘gold standard’ that the L2 group has to reach to be labeled ‘native-like’. This relies on the assumption that the grand average is representative of all or most individuals in a group. Recent research, however, has shown that there can be considerable systematic qualitative variability between individuals even in coherent L1 samples, especially in studies on morphosyntactic processing. We discuss how these qualitative individual differences can undermine previous findings from the gold standard paradigm, and critically assess the main ERP components used as markers for nativelike grammatical processing, namely the left-anterior negativity and the P600. We argue that qualitative variation reflects the dynamics characteristic of nativelike grammatical processing and propose a model for experimental designs that can capture these processing dynamics and, thereby, has the potential to provide a more fine-grained understanding of nativelike attainment in an L2.

    Läs mer om Is It Time to Reconsider the ‘Gold Standard’ for Nativelikeness in ERP Studies on Grammatical Processing in a Second Language? A Critical Assessment Based on Qualitative Individual Differences 

  • Age of acquisition – not bilingualism – is the primary determinant of less than nativelike L2 ultimate attainment

    2021. Emanuel Bylund, Kenneth Hyltenstam, Niclas Abrahamsson. Bilingualism 24 (1), 18-30

    Artikel

    It has recently been suggested that bilingualism, rather than age of acquisition, is what underlies less than nativelike attainment in childhood L2 acquisition. Currently, however, the empirical evidence in favor of or against this interpretation remains scarce. The present study sets out to fill this gap, implementing a novel factorial design in which the variables age of acquisition and bilingualism have been fully crossed. Eighty speakers of Swedish, who were either L1 monolinguals, L1 simultaneous bilinguals, L2 sequential monolinguals (international adoptees), or L2 sequential bilinguals (childhood immigrants), were tested on phonetic, grammatical, and lexical measures. The results indicate consistent effects of age of acquisition, but only limited effects of bilingualism, on ultimate attainment. These findings thus show that age of acquisition – not bilingualism – is the primary determinant of L2 ultimate attainment.

    Läs mer om Age of acquisition – not bilingualism – is the primary determinant of less than nativelike L2 ultimate attainment

  • Ligger "nästan inföddlikhet" i tvåspråkighetens natur? Om ålders- vs tvåspråkighetseffekter vid andraspråksinlärning

    2021. Niclas Abrahamsson, Emanuel Bylund. Språk och stil 31 (1), 108-142

    Artikel

    Den relativt nyvunna insikten att den slutliga behärskningsnivån i ett andraspråk (L2) hos tidiga inlärare inte alltid (eller ens särskilt ofta) är helt och hållet jämförbar med den hos infödda talare har lett till ett ifrågasättande av inlärningsålder som orsaken till denna "nästan" (snarare än helt) inföddlika L2-behärskning. En fullt möjlig och i dagsläget mycket omhuldad tolkning är att sådana skillnader i stället uppkommer naturligt som en artefakt av jämförelsen mellan enspråkiga och tvåspråkiga individer, och att blotta närvaron av två aktiva språksystem ger oundvikliga avtryck på den språkliga representationen och processningen – på båda språken och oavsett inlärningsålder. Till samma tankegods hör antagandet att den snabba och totala förlusten av förstaspråket (L1) hos internationellt adopterade barn möjliggör en så kallad "neural nollställning", så att enspråkig, inföddliknande inlärning av det nya språket blir det givna resultatet, medan ett bevarat, aktivt modersmål (hos t.ex. invandrarbarn) däremot utgör ett "filter" genom vilket andraspråket lärs in och färgas. Ett avgörande problem med dessa teorier är dock att de i princip helt saknar stöd i empiriska studier. Mot bakgrund av dessa nya (eller nygamla?) idétrender inom andraspråksforskningen presenterar vi därför i denna artikel en nyligen avslutad studie som på ett direkt sätt angriper frågan om ålderseffekter vs tvåspråkighetseffekter.

    Läs mer om Ligger "nästan inföddlikhet" i tvåspråkighetens natur? Om ålders- vs tvåspråkighetseffekter vid andraspråksinlärning

  • Revisiting the bilingual lexical deficit: The impact of age of acquisition

    2019. Emanuel Bylund (et al.). Cognition (182), 45-49

    Artikel

    Whereas the cognitive advantages brought about by bilingualism have recently been called into question, the socalled‘lexical deficit’ in bilinguals is still largely taken for granted. Here, we argue that, in analogy with cognitiveadvantages, the lexical deficit does not apply across the board of bilinguals, but varies as a function ofacquisition trajectory. To test this, we implement a novel methodological design, where the variables of bilingualismand first/second language status have been fully crossed in four different groups. While the resultsconfirm effects of bilingualism on lexical proficiency and processing, they show more robust effects of age ofacquisition. We conclude that the traditional view of the linguistic costs of bilingualism need to give way to anew understanding of lexical development in which age of acquisition is seen as a major determinant.

    Läs mer om Revisiting the bilingual lexical deficit: The impact of age of acquisition

  • Effects of age and speaking rate on voice onset time

    2015. Katrin Stölten, Niclas Abrahamsson, Kenneth Hyltenstam. Studies in Second Language Acquisition 37 (1), 71-100

    Artikel

    As part of a research project on the investigation of second language (L2) ultimate attainment in 41 Spanish early and late near-native speakers of L2 Swedish, the present study reports on voice onset time (VOT) analyses of the production of Swedish word-initial voiceless stops, /p t k/. VOT is analyzed in milliseconds as well as in percentages of word duration, thereby accounting for speaking rate effects. The results revealed an overall age effect on VOT production; however, this age effect became salient and sta­tistically significant for all three stops only when speaking rate was taken into consider­ation. Similarly, when speaking rate was accounted for, only a small minority of the late learners exhibited actual nativelike L2 behavior, and most (but far from all) early learn­ers performed within native-speaker range. The results are taken as an indication for relative VOT, as opposed to absolute VOT, constituting a reliable measure of nativelike L2 stop production, which has important implications for future research on age effects and maturational constraints in L2 acquisition.

    Läs mer om Effects of age and speaking rate on voice onset time

  • Effects of Age of Learning on Voice Onset Time

    2014. Katrin Stölten, Niclas Abrahamsson, Kenneth Hyltenstam. Language and Speech 57 (4), 425-450

    Artikel

    This study examined the effects of age of onset (AO) of L2 acquisition on the cate­gorical perception of the voicing contrast in Swedish word-initial stops varying in Voice Onset Time (VOT). Three voicing continua created on the basis of natural Swedish word pairs with /p–b/, /t–d/, /k–ɡ/ in initial position were presented to 41 Spanish early (AO < 12) and late (AO > 12) near-native speakers of L2 Swedish. 15 native speakers of Swedish served as controls. Categorizations were influenced by AO and listener status as L1/L2 speaker, in that the late learners deviated the most from native-speaker perception. In addition, only a small minority of the late learners perceived the voicing contrast in a way comparable to native-speaker cate­gorization, while most early L2 learners demonstrated nativelike categorization patterns. However, when the results were combined with the L2 learners’ produc­tion of Swedish voiceless stops (Stölten, 2005; Stölten, Abrahamsson & Hylten­stam, in press), nativelike production and perception was never found among the late learners, while a majority of the early learners still exhibited nativelike pro­duction and perception. It is concluded that, despite their being perceived as mother-tongue speakers of Swedish by native listeners, the late learners do not, after detailed phonetic scrutiny, exhibit a fully nativelike command of Swedish VOT. Consequently, being near-native rather than nativelike speakers of their second language, these individuals do not constitute the evidence necessary to reject the hypothesis of one or several critical (or sensitive) periods for language acquisition.

    Läs mer om Effects of Age of Learning on Voice Onset Time

  • Age of onset and nativelike l2 ultimate attainment of morphosyntactic and phonetic intuition

    2012. Niclas Abrahamsson. Studies in Second Language Acquisition 34 (2), 187-214

    Artikel

    Research has consistently shown there is a negative correlation between age of onset (AO) of acquisition and ultimate attainment (UA) of either pronunciation or grammar in a second language (L2). A few studies have indeed reported nativelike behavior in some postpuberty learners with respect to either phonetics/phonology or morphosyntax, a result that has sometimes been taken as evidence against the critical period hypothesis (CPH). However, in the few studies that have employed a wide range of linguistic tests and tasks, adult learners have not exhibited nativelike L2 proficiency across the board of measures, which, according to some, suggests that the hypothesis still holds. The present study investigated the relationship between AO and UA and the incidence of nativelikeness when measures of phonetic and grammatical intuition are combined. An additional aim was to investigate whether children and adults develop the L2 through fundamentally different brain mechanisms-namely, whether children acquire the language (more) implicitly as an interdependent whole, whereas adults learn it (more) explicitly as independent parts of a whole.

    Läs mer om Age of onset and nativelike l2 ultimate attainment of morphosyntactic and phonetic intuition

  • Does first language maintenance hamper nativelikeness in a second language?

    2012. Emanuel Spångberg Bylund, Niclas Abrahamsson, Kenneth Hyltenstam. Studies in Second Language Acquisition 34 (2), 215-241

    Artikel

    Within the field of SLA, the incidence of nativelikeness in second language (L2) speakers has typically been explained as a function of age of acquisition. An alternative interpretation, however, is that L2 learners do not attain nativelike proficiency because of first language (L1) maintenance. This interpretation has nevertheless remained mostly theoretical due to the lack of empirical evidence. This study sets out to address the role of L1 proficiency in L2 ultimate attainment by examining L1 and L2 proficiency in 30 early L1 Spanish-L2 Swedish bilinguals. Language proficiency was assessed through grammaticality judgment tests and cloze tests, and additional data on language aptitude were collected through the Swansea Language Aptitude Test (v. 2.0; Meara, Milton, & Lorenzo-Dus, 2002). The results showed positive correlations between nativelike L1 and L2 behavior. Additionally, it was found that language aptitude was positively correlated with nativelike L1 and L2 performance. In view of these findings, it is suggested that (a) L1 maintenance does not hamper L2 nativelikeness and (b) language aptitude is an important factor for bilingual ultimate attainment.

    Läs mer om Does first language maintenance hamper nativelikeness in a second language?

  • The role of language aptitude in first language attrition

    2010. Emanuel Bylund, Niclas Abrahamsson, Kenneth Hyltenstam. Applied Linguistics 31 (3), 443-464

    Artikel

    While language aptitude has been investigated actively within second language research, there is a current dearth of research on the effects of aptitude in cases of attrition. The aim of the present investigation was to explore the role of language aptitude for L1 proficiency in speakers who experienced a break with their L1 setting prior to puberty. Twenty-five L1 SpanishL2 Swedish bilinguals residing in Sweden participated in the study, and 15 native speakers of Spanish living in Chile were recruited as controls. The L1 proficiency was measured by means of a grammaticality judgement test (GJT) and language aptitude data were obtained through the Swansea Language Aptitude Test (Meara et al. <xref ref-type="bibr" rid="B36">2003</xref>). Results showed a positive correlation between GJT performance and language aptitude. More specifically, the bilinguals with above-average aptitude were more likely to score within the native range on the GJT than those with below-average aptitude. It was also seen that among the participants with below-average aptitude, GJT scores were related to daily L1 use. In view of these findings, we suggest that language aptitude has a compensatory function in language attrition, helping the attriter to retain a high level of L1 proficiency despite reduced L1 contact.

    Läs mer om The role of language aptitude in first language attrition

  • Andraspråksinlärning

    2009. Niclas Abrahamsson.

    Bok

    Denna grundbok belyser fenomenet, ämnet och forskningsfältet andraspråksinlärning. Med utgångspunkt i 1960-talets brytning med behavioristisk inlärningspsykologi och kontrastiv språkanalys diskuteras de mest centrala frågeställningarna inom den därefter följande moderna, mentalistiskt orienterade andraspråksforskningen.

    I bokens tio kapitel presenteras de huvudsakliga empiriska upptäckterna och teorierna om andraspråkets utveckling och variation, dess kognition, processning och universella egenskaper, liksom inflödets, interaktionens och undervisningens roll, effekter av sociala och individuella skillnader samt modersmålets inverkan. Många exempel ges från studier av svenska som andraspråk. Boken avslutas med en termordlista med förklaringar till centrala begrepp inom fältet.

    Boken vänder sig främst till universitetsstuderande på grundnivå i ämnen som tvåspråkighet, svenska och nordiska språk samt till blivande och verksamma lärare i svenska som andraspråk och modersmålssvenska.

    Läs mer om Andraspråksinlärning

  • Dominant-language replacement

    2009. Kenneth Hyltenstam (et al.). Bilingualism 12 (2), 121-140

    Artikel

    This article challenges a recent proposal for the theoretical interpretation of L1 and L2 interaction that results from the abrupt change of language environment in internationally adopted children. According to this proposal (Pallier, Dehaene, Poline, LeBihan, Argenti, Depoux and Mehler, 2003; Ventureyra, Pallier and Yoo, 2004), such children experience a total loss of their L1, while, as adults, they exhibit a nativelike ultimate attainment of their L2. These authors suggest that what they see as a total loss of L1 allows a resetting of the neural network that normally subserves L1 retention and hence permits a complete acquisition of the L2. Data from two of our own research projects, one on L1 remnants in Korean adoptees in Sweden (see Park, forthcoming), and the other on age of acquisition and ultimate L2 attainment of Swedish (see Abrahamsson and Hyltenstam, in press), which included data from Latin American adoptees in Sweden among other participants, suggest (i) that L1 remnants are indeed maintained, (ii) that L2 attainment is not enhanced by severe L1 attrition, and (iii) that there is an age dimension to both the degree of L1 attrition and the level of L2 ultimate attainment in international adoptees. We therefore contend that a maturational interpretation of language replacement data is preferable.

    Läs mer om Dominant-language replacement

  • The robustness of aptitude effects in near-native second language acquisition

    2008. Niclas Abrahamsson, Kenneth Hyltenstam. Studies in Second Language Acquisition 30 (4), 481-509

    Artikel

    Results from a number of recent studies suggest that nativelike adult second language (L2) learners possess a high degree of language learning aptitude, the positive effects of which may have compensated for the negative effects of a critical period in these learners. According to the same studies, child learners seem to attain a nativelike command of the L2 regardless of high or low aptitude, which has led researchers to conclude that this factor plays no role in early acquisition. The present study investigates the L2 proficiency and language aptitude of 42 near-native L2 speakers of Swedish (i.e., individuals whom actual mother-tongue speakers of Swedish believe are native speakers). The results confirm previous research suggesting that a high degree of language aptitude is required if adult learners are to reach a L2 proficiency that is indistinguishable from that of native speakers. However, in contrast to previous studies, the present results also identify small yet significant aptitude effects in child SLA. Our findings lead us to the conclusions that the rare nativelike adult learners sometimes observed would all turn out to be exceptionally talented language learners with an unusual ability to compensate for maturational effects and, consequently, that their nativelikeness per se does not constitute a reason to reject the critical period hypothesis.

    Läs mer om The robustness of aptitude effects in near-native second language acquisition

  • Development and recoverability of L2 codas: A longitudinal study of Chinese/Swedish interphonology

    2003. Niclas Abrahamsson. Studies in Second Language Acquisition 25 (3), 313-349

    Artikel

    This study deals with the development and recoverability of word-final codas in Chinese-Swedish interlanguage. The relation between consonant deletion and vowel epenthesis is investigated from both a developmental perspective and a grammatical-functional one. Longitudinal, conversational data from three Chinese beginner learners of Swedish were analyzed. First, it is shown that for these learners the acquisition of Swedish codas was U-shaped rather than linear such that they exhibited relatively high accuracy rates at early stages, lower accuracy rates at later stages, and again high accuracy rates at more advanced stages. It is also demonstrated that the epenthesis-deletion differential is closely related to second language proficiency in that the proportion of epenthesis to deletion errors increases over time. Furthermore, the data show that word-final codas that are relatively important for the retention of semantically relevant information generate lower overall frequencies of simplification and greater epenthesis-deletion proportions than codas containing information that is relatively recoverable from other segments or features in the context.

    Läs mer om Development and recoverability of L2 codas: A longitudinal study of Chinese/Swedish interphonology

  • Acquiring L2 Syllable Margins

    2001. Niclas Abrahamsson, Björn Hammarberg, Roy Major.

    Avhandling (Dok)

    This thesis deals with developmental, universal, grammatical, and functional factors involved in the acquisition of L2 syllable structure. More specifically, using speech data from Spanish and Chinese learners of Swedish, the thesis examines the production and development of syllable onsets and codas—that is, syllable margins. In doing so, the present work draws on various theoretical considerations and empirical findings from research on L1 and L2 acquisition, phonology and phonetics, language variation and language typology. The thesis includes three empirical studies, all of which are based on longitudinal conver­sational data. Study I deals with the acquisition of word-initial /sC(C)/ onsets by one native Spanish speaker, whereas Study II and Study III focus on the acquisi­tion of word-final codas by three native Chinese speakers. Study I and Study II both showed that onset and coda length and phonetic environment are influen­tial factors in the production of syllable structure, while sonority may not be as reliable a predictor of production difficulty. Next, both Study I and Study III provide evidence of a U-shaped rather than linear development of pronunciation accuracy. This pattern is interpreted as an effect of initial increase in fluency, with more focus on content and less on form. In addition, Study III showed that L2 proficiency is related to the epenthesis-deletion differential. An increasing ratio of epenthesis-to-deletion is the first-order indicator of increasing L2 profi­ciency during early stages of acquisition, but increased target-like production becomes the first-order indicator of development at later stages. Finally, Study III showed that learners are aware of potential ambiguity resulting from simpli­fication in different grammatical/functional categories. Codas that are essential for the retention of semantic information are preserved through higher accuracy rates and higher relative levels of epenthesis errors.

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  • Vowel epenthesis of /sC(C)/ onsets in Spanish/Swedish inter­phonology: A longitudinal case study

    1999. Niclas Abrahamsson. Language learning 49 (3), 473-508

    Artikel

    Previous studies showed that vowel epenthesis of initial /sC(C)/ clusters in the L2 production of L1 Spanish speakers is conditioned by several variable constraints, such as preceding environment, onset length, and sonority relations among onset members. This case study was designed to investigate whether the patterns obtained from elicited speech also hold for conversational data. A longitudinal corpus of spontaneous/natural speech from 1 adult L1 Spanish learner of L2 Swedish was used. The study confirmed most of the results from previous research, for example, that the frequency of epenthesis varies with preceding phonetic environment. However, the study suggested that a lowering effect of preceding vowels must be present, not just the enhancing effect of preceding consonants suggested by Carlisle (1997).

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