Researcher Profile and Settings

URL

http://www1.doshisha.ac.jp/~msugahar

researchmap

https://researchmap.jp/read0122533

Research Interests

• perception and production of English stress by native and non-native speakers of English
• morphology-prosody interface
• focus-prosody interface
• syntax-prosody interface
• phonetics
• phonology
• intonation
• prosody

Research Areas

• Humanities & social sciences / Linguistics
• Humanities & social sciences / English linguistics

Research History

• 2000-2003 Studies on Japanese intonation and focus (under the supervision of E. Selkirk and J. Kingston)
• 2003-2005 Studies on word-level duration adjustments in English (with A. Turk)
• 2006- Stduies on English stress

Research Experience

• Doshisha University, Faculty of Letters/Graduate School of Letters, Professor, 2017/04 - Today
• Doshisha University, Faculty of Letters, Associate Professor, 2009/04 - 2017/03
• Doshisha University, Faculty of Letters, Full-time Lecturer, 2005/04 - 2009/03
• The University of Edinburgh, Department of Theoretical & Applied Linguistics, Postdoctoral researcher, 2003 - 2005
• The University of Edinburgh, Department of Theoretical & Applied Linguistics, Part-time lecturer, 2004 -
• University of Massachusetts, Amherst, Department of Linguistics, Research assistant, 2001 - 2002
• University of Massachusetts, Amherst, Department of Linguistics, Instructor (teaching associate), 1999 - 2001
• University of Massachusetts, Amherst, Department of Linguistics, Teaching assistant, 1996 - 1999

Education

• University of Massachusetts, Amherst, PhD program, Department of Linguistics, 1996 - 2003
• The University of Tokyo, 総合文化研究科修士課程, 言語情報科学専攻, 1994/04 - 1996/03
• International Christian University, College of Liberal Arts, 1990/04 - 1994/03

Degree

• Ph.D., University of Massachusetts
• Master of Arts, The University of Tokyo

Association Memberships

• 関西言語学会
• 日本音韻論学会
• 日本音声学会
• 日本言語学会
• 日本英語学会
• 日本英文学会
• 同志社大学英文学会
• Linguistic Society of America
• Acoustical Society of America
• Kansai Linguistics Society
• The Phonological Society of Japan
• Phonetic Society of Japan
• The Linguistic Society of Japan
• The English Linguistics Society of Japan
• The English Literary Society of Japan
• English Literary Society of Doshisha University
• Linguistic Society of America
• Acoustical Society of America

Committee Memberships

• International Relations Committee member, 2022/04 - Today, Phonetic Society of Japan, Society
• Editorial Committee member, 2021/07 - Today, The English Linguistic Society of Japan, Society
• member of the board of directors, 2021/04 - Today, The Phonological Society of Japan, Society
• Editorial Committee member, 2019/04 - 2022/03, Phonetic Society of Japan, Society
• member of the meeting organizing committee, 2017/06 - 2020/05, Kansai Linguistic Society, Society
• The secretary of annual meeting organizing committee, 2017/04 - 2017/11, The English Linguistic Society of Japan, Society
• Planning Committee, 2013 - 2015, Phonetic Society of Japan, Society, Phonetic Society of Japan
• Member of the Meeting Organizing Committee, 2010 - 2013, The English Linguistic Society of Japan, Society, The English Linguistic Society of Japan
• Member of the board of directors, 2009 - 2012, The Phonological Society of Japan, Society, The Phonological Society of Japan
• Chairperson of the Meeting Organizing Committee, 2010 - , The English Literary Society of Doshisha University, Society, English Literary Society of Doshisha University
• 大会準備委員長, 2010 - , 同志社大学英文学会, Society, 同志社大学英文学会
• Member of the Meeting Organizing Committee, 2006 - 2008, The Linguistic Society of Japan, Society, The Linguistic Society of Japan

Published Papers

• Formant characteristics of unstressed unreduced vowels in American English: Only explained by duration?
  Mariko Sugahara
  Radek Skarnitzl & Jan Volín (Eds.), Proceedings of the 20th International Congress of Phonetic Sciences, Guarant International., 2174 - 2178, Aug. 2023, International conference proceedings
  

  URL of the attached file
• Evaluating Prosodic Prominence of Post-Tonic Word-Final Syllables With Full Vowels in English: A Study Based on an Introspective Judgment Task Without Auditory Stimuli
  Mariko Sugahara
  Doshisha Studies in English, (104) 137 - 159, Mar. 2023, Research institution
  

  URL of the attached fileDOI URL
• The Prominence Degree of Word-Initial Pretonic Syllables with Full Vowels in English: An Introspective Rating Study
  Mariko Sugahara
  The Joy and Enjoyment of Linguistic Research: A Festschrift for Takane Ito, 441 - 450, Mar. 2021, In book
  

  URL of the attached file
• Lexical Stress Assignment to Base, Inflected and Derived Words in English by Japanese and Seoul Korean Learners of English
  Mariko Sugahara
  10th International Conference on Speech Prosody 2020, ISCA, 25 May 2020, International conference proceedings
  

  URL of the attached fileDOI URL
• The Effect of Native Languages on the Judgement of Primary Stress Locations in English: A Questionnaire Study on Stress Assignment to Present Participle/Gerundive Forms with -ing and Derived Nominals with -ion
  Mariko Sugahara
  Doshisha Studies in English, (100) 165 - 221, Mar. 2019, Research institution
  

  URL of the attached fileDOI URL
• Is the Perception of English Stress Influenced by the Distribution of Lexical Prominence in L1? In the Case of Truncated Word Stimuli
  Mariko Sugahara
  Doshisha Studies in English, Alternative:The Literary Association, Doshisha University, (97) 59 - 118, Nov. 2016
  

  URL of the attached fileDOI URL
• Is Japanese listeners' perception of English stress influenced by the antepenultimate accent in Japanese? Comparison with English and Korean listeners
  Mariko Sugahara
  Doshisha Studies in English, Alternative:The Literary Association, Doshisha University, (96) 61 - 111, Mar. 2016, Research institution
  

  URL of the attached fileDOI URL
• Phonetic evidence for prosodic word prominence in American English
  Mariko Suaghara
  Prosody Matters: Essays in Honor of Elisabeth Selkirk, 208 - 236, 2012
  

  URL of the attached file
• Identification of English primary stress and bias toward strong word-initial syllables: native vs. Japanese listeners
  Mariko Sugahara
  Proceedings of the XVIIth International Congress of Phonetic Sciences, 2011
  

  URL of the attached file
• Durational correlates of English sublexical constituent structure
  Mariko Sugahara; Alice Turk
  PHONOLOGY, CAMBRIDGE UNIV PRESS, 26(3) 477 - 524, 2009, Scientific journal
  

  DOI URL
• A Study on the Lack of Flapping at the Final Syllable of Dactylic Sequences: An OCP-Based Account (text in Japanese)
  Mariko Sugahara
  Doshisha Studies in English, 82, 2008
• A Study on the Lack of Flapping at the Final Syllable of Dactylic Sequences: An OCP-Based Account
  Sugahara Mariko
  Doshisha studies in English, Doshisha University, 82 87 - 114, 2008
  

  DOI URL
• Secondary stress vowels in American English: the target undershoot of F1 and F2 formant values
  菅原 真理子
  Proceedings of ICPhS 2007, 2007
• Acoustic Segment Durations in Prosodic Research: A Practical Guide", Methods in Empirical Prosody Research
  Alice Turk; Satsuki Nakai; Mariko Sugahara; Alice Turk; Satsuki Nakai
  Methods in Empirical Prosody Research, 2006
• Post-focus prosodic phrase boundaries in Tokyo Japanese: Asymmetric behavior of an F0 cue and domain-final lengthening
  M Sugahara
  STUDIA LINGUISTICA, WILEY-BLACKWELL, 59(2-3) 144 - 173, Aug. 2005, Scientific journal
• Phonetic Reflexes of Morphological Boundaries at a Normal Speech Rate
  Mariko Sugahara; Alice Turk
  Proceedings of the 2nd International Conference on Speech Prosody, 2004
• Conditions on Post-Focus Dephrasing in Tokyo Japanese
  Mariko Sugahara
  Proceedings of the 1st International Conference on Speech Prosody, 655 - 658, 2002

MISC

• Book review of Kunter (2011), Compound Stress in English: The Phonetics and Phonology of Prosodic Prominence
  Mariko Sugahara
  Studies in English Literature, 54 167 - 173, 2013
• Book review of Gussenhoven (2004), The phonology of tone and intonation
  Mariko Sugahara
  英文学研究, 84, 2007

Books etc

• 英語上達40レッスン : 言語学から見た4技能の伸ばし方
  畠山, 雄二; 縄田, 裕幸; 本田, 謙介; 田中, 江扶; 澤田, 治; 菅原, 真理子; 今仁, 生美
  朝倉書店, Jul. 2020, Contributor, 「3.2 母音と子音を正しく聞き取る ―日英語の音素の数と質の違い―」pp.102-105 「3.3 音変化を意識して聞き取る ―強化、弱化、同化、連結発音―」pp.106-109 「3.4 イントネーションを聞き取る ―ピッチアクセントと句末音調―」pp.110-113
• Phonology: Asakura Japanese-English Comparative Linguistics Series 3
  Mariko Sugahara; Takahito Shinya; Itsue Kawagoe; Yuko Yoshida; Hideki Zamma; Tetsuo Nishihara
  Asakura Publishing, 2014, Editor, 「まえがき」 pp. iii-iv, 「第4章 形態構造と音韻論」 pp. 88-105, 「第5章 句レベルの音韻論」 pp. 106-132, 「第6章 最適性理論」 pp. 133-158., Scholarly book
• Prosody Matters: Essays in Honor of Elisabeth Selkirk
  Toni Borowski; Shigeto Kawahara; Takahito Shinya; Mariko Sugahara
  Equinox, 2012, Joint editor, Scholarly book
• Downtrends and Post-FOCUS Intonation in Japanese (PhD dissertation submitted to University of Massachusetts in 2003)
  Mariko Sugahara
  GLSA, University of Massachusetts at Amherst, 2005, Single work, Scholarly book

Presentations

• Syntagmatic and paradigmatic comparisons to detect syllables with primary stress: Which is more correlated with speakersʼ stress awareness?
  Mariko Sugahara; Sylvain Coulange; Tsuneo Kato
  The 20th Phonology Festa, 04 Mar. 2025, 04 Mar. 2025, 05 Mar. 2025, Oral presentation
• English Lexical Stress in Awareness and Production: Native and Non-native Speakers
  Mariko Sugahara; Sylvain Coulange; Tsuneo Kato
  Labphon 19, 29 Jun. 2024, 27 Jun. 2024, 29 Jun. 2024, Poster presentation,
  

  URL of the attached file
• 中学生の英語音声分析報告
  加藤恒夫; 菅原真理子
  同志社国際中学高等学校教職員研修会, 28 Feb. 2024
• 意識されている強勢 vs. 発話における強勢―日本人と韓国人の大学生による英単語への主強勢付与の比較
  菅原真理子; Sylvain Coulange; 加藤恒夫
  日本音声学会 第347回研究例会, 25 Nov. 2023, Oral presentation
• Formant characteristics of unstressed unreduced vowels in American English: Only explained by duration?
  Mariko Sugahara
  The 20th International Congress of Phonetic Sciences (ICPhS 2023), 07 Aug. 2023, 07 Aug. 2023, 11 Aug. 2023, Poster presentation,
  

  URL of the attached file
• Assignment of English Lexical Stress by Japanese and Seoul Korean Learners of English
  Mariko Sugahara
  Prosody & Grammar Festa 5 (NINJAL Collaborative Research Project), 22 Feb. 2021, 20 Feb. 2021, 21 Feb. 2021, Oral presentation,
  

  URL of the attached file
• The prominence levels and the acoustic properties of English fill vowels: preliminary result report
  Mariko Sugahara
  国立国語研究所 対照言語学プロジェクト プロソディー研究班 オンライン研究会, 15 Jan. 2021, 15 Jan. 2021, 15 Jan. 2021, Oral presentation
• Assignment of English Lexical Stress by Japanese and Seoul Korean Learners of English
  Mariko Sugahara
  The 28th Japanese/Korean Linguistics Conference Satellite Workshop: Experimental Phonetics and Phonology, 28 Dec. 2020, 28 Dec. 2020, 28 Dec. 2020, Invited oral presentation,
  

  URL of the attached file
• Lexical Stress Assignment to Base, Inflected and Derived Words in English by Japanese and Seoul Korean Learners of English
  Mariko Sugahara
  10th International Conference on Speech Prosody 2020, May 2020, May 2020, May 2020, Oral presentation,
  

  URL of the attached file
• The prominence levels of full vowels in English: A questionnaire study
  Mariko Sugahara
  Phonology Festa 14, 04 Mar. 2019, 04 Mar. 2019, 05 Mar. 2019, Oral presentation
• Lexical stress assignment in English trisyllabic verbs ending with -ate and –ute by Japanese and Seoul Korean speakers
  Mariko Sugahara
  ICPP 2018, 27 Oct. 2018, 26 Oct. 2018, 28 Oct. 2018, Poster presentation
• The register tones and the voicing contrast of two-character and three-mora Sino Japanese nouns in Osaka Japanese
  Phonology Festa 11 (Orally presented on March 11, 2016, at Ritsumeikan University, Kyoto), 2016
• Is Japanese listeners' perception of English lexical stress influenced by the antepenultimate accent in Japanese? In the case of truncated stimuli
  Phonology Festa 11 (orally presented on March 10, 2016, at Ritsumeikan University), 2016
• 大阪方言における2字漢語3拍名詞の式音調と声の対立
  Phonology Festa 11 (2016年3月11日に口頭発表・立命館大学にて), 2016
• Is Japanese listeners' perception of English lexical stress influenced by the antepenultimate accent in Japanese? In the case of truncated stimuli
  Phonology Festa 11 (2016年3月10日に口頭発表・立命館大学にて), 2016
• Identification of English primary stress by Japanese listeners and bias toward word-final stress: due to F0 patterns or an influence from Japanese loanword accent?
  ICPP 2013 (presented as a poster on January 26, 2013, at NINJAL), 2013, Poster presentation
• Identification of English primary stress by Japanese listeners and bias toward word-final stress: due to F0 patterns or an influence from Japanese loanword accent?
  ICPP 2013 （2013年1月26日にポスター発表、国立国語研究所にて）, 2013, Poster presentation
• Identification of English primary stress: native vs. Japanese listeners
  SUGAHARA Mariko
  Linguistic Society of Korea (held on October 27, 2012), 2012, Korea （Seoul National University）
• Discussantant for Carlos Gussenhoven's talk "A Typology of Tones, with Reference to the Intonation of Some Varieties of English" （ディスカッサンタントとしてシンポジウムに参加）
  菅原 真理子
  ISAT (International Symposium on Accent and Tone), 2011, 国立国語研究所（東京都立川市）
• Perception of English Stress When Pitch is Not a Reliable Cue: Native Listeners vs. Non-Native Listeners
  KCP (Kansai Circle of Psycholinguistics, presented on January 29, 2011, at Kwansei Gakuin University Umeda Satellite Campus), 2011
• Perception of English stress: English speakers vs. Japanese speakers
  ISAT (International Symposium on Accent and Tone, poster presented on December 20, 2011, at NINJAL), 2011, Poster presentation
• Variations in the shiki domain formation of Kinki Japanese compound words: a pilot study
  ICPP 2011 (poster presented on December 13, 2011, at Kyoto University, organized by NINJAL), 2011, Poster presentation
• Identification of English primary stress and bias toward strong word-initial syllables: native vs. Japanese listeners
  The XVIIth International Congress of Phonetic Sciences (orally presented on August 19, 2011, Hong Kong), 2011
• Perception of English Stress When Pitch is Not a Reliable Cue: Native Listeners vs. Non-Native Listeners
  KCP（関西心理言語学研究会、2011年1月29日に発表、関西学院大学梅田サテライトキャンパスにて）, 2011
• Perception of English stress: English speakers vs. Japanese speakers
  ISAT (アクセントと声調に関する国際シンポジウム、2011年12月20日にポスター発表、国立国語研究所), 2011, Poster presentation
• Variations in the shiki domain formation of Kinki Japanese compound words: a pilot study
  ICPP 2011 (2011年12月13日にポスター発表、京都大学にて、国立国語研究所主催）, 2011, Poster presentation
• Identification of English primary stress and bias toward strong word-initial syllables: native vs. Japanese listeners
  The XVIIth International Congress of Phonetic Sciences（2011年8月19日に口頭発表、香港にて）, 2011
• Shiki-preservation and prosodic structure in the compounds of Kansai dialect in Japanese
  PAIK (Phonological Association in Kansai, presented on May 9, 2010, at Kobe College), 2010
• 関西方言の複合語における式保存と韻律構造
  PAIK (Phonological Association in Kansai, 2010年5月9日に発表、神戸女学院大学にて), 2010
• Secondary Stress Vowels in American English: The Target Undershoot of F1 and F2 Formant Values （ポスター発表）
  菅原 真理子
  ICPhS XVI (International Congress of Phonetic Sciences), 2007, Saarbrucken University, Germany
• シンポジウム「音声分析ソフトPraatを利用した音声・音韻研究：入門から最前線まで」（シンポジウムの主催と講演）
  菅原 真理子
  日本英語学会第２４回大会, 2006, 東京大学本郷キャンパス
• Focus and Intonation: An Interaction among Contrastive Focus and Other Grammatical Factors”. As one of the speakers of the symposium “Focus Across the Grammar
  菅原 真理子
  日本英語学会・第23回大会, 2005, 九州大学
• Is There Duration Evidence for the Within-Word Foot in English?
  菅原 真理子
  Kansai Linguistic Society, 2005, 関西大学
• Sublexical Constituent Duration Patterns in Scottish English
  菅原 真理子
  Queen Mary University of London Linguistics Colloquium, 2005, Queen Mary University of London, London, UK
• Right vs. Left Asymmetry of Post-FOCUS Prosodic Phrase Boundaries in Tokyo Japanese: Evidence from F0 and Domain-Final Vowel Duration
  菅原 真理子
  The GLOW 2003 Workshop on Boundaries in Intonational Phonology, 2004, Lund, Sweden
• Phonetic Reflexes of Morphological Boundaries Under Different Speech Rates
  菅原 真理子
  Laboratory Phonology 9, 2004, University of Illinois, USA
• The Presentational Focus vs. Given Distinction in Tokyo Japanese Prosody
  菅原 真理子
  Interfaces Prosodigues (IP) 2003, 2003, University of Nantes, France
• Interaction of XP-Major Phrase Alignment and Non-Finality
  菅原 真理子
  The 24th Annual Penn Linguistics Colloquium, 2000, University of Pennsylvania, USA
• The Influence of L1 Lexical Prominence Systems on the Judgement of Stress Locations in Written English Words: Comparison between Japanese and Seoul Korean Speakers
  The 24th Japanese/Korean Linguistics Conference (presented as a poster on October 15, 2016, at NINJAL), 1016, Poster presentation
• The Influence of L1 Lexical Prominence Systems on the Judgement of Stress Locations in Written English Words: Comparison between Japanese and Seoul Korean Speakers
  The 24th Japanese/Korean Linguistics Conference （2016年10月15日にポスター発表 国立国語研究所にて）, 1016, Poster presentation

Research Projects

• Automatic evaluation of English pronunciation and prosody for Japanese children based on longitudinal analysis
  加藤 恒夫; 菅原 真理子; 山本 誠一; 山田 玲子
  本研究課題は，日本における外国語学習の初期段階にあたる小中学生向けに効果的な英語コミュニケーション訓練システムを構築するため，様々な言語的背景をもつ日本人小中学生の英語音声を継続的に収録し，追跡的な分析を行うとともに，分析結果を踏まえて英語発音・韻律自動評価訓練システムを構築することを目的としている． 2023年度は京都府内の2つの公立小学校で4年生計170名を対象に継続的な英語音声収録に着手した．初回は，英語音声収録に慣れてもらうことを第一目的として，基本的な英単語と挨拶程度の定型文をお手本音声の復唱形式で発声してもらった．復唱形式であったため，発声できない問題は生じなかった．収録した英語音声について音声認識技術を用いた強制アライメントにより母音挿入，母音置換，カタカナ発音の頻度を調査し，分析結果を2つの小学校にフィードバックした．今後，学会発表を予定している． 私立中学校で収録済みの30名の英語音声について，国内で日本語による初等教育を受けた生徒群(JP)，国内でバイリンガル初等教育を受けた生徒群(BP)，帰国子女群(EP)の3群に分類し，単母音のフォルマント分析と短文発話における韻律の分析を行った．中学校にて報告会を開催し，英語教師との意見交換も行った．今後，学会発表を予定している． 英語韻律自動評価方式として，2023年度は最新の音声認識WhisperXと強制アライナMFAを用いるパイプライン方式を検討した．日本人小学生の英語暗唱音声における語彙強勢位置について，パイプライン方式による自動評価と英語母語話者による主観評価を比較した．また，小学校での音声収録用に動的に画面表示，音声出力，録音音声の波形表示，発声単位の音声ファイル保存を行えるWebアプリケーションを開発し，オンライン発音・韻律評価訓練システムのベースを構築した．, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2023/04 -2028/03, Grant-in-Aid for Scientific Research (B), Doshisha University
• The relation between the perception/production of English lexical stress and phonological knowledge
  Mariko Sugahara
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2022/04 -2027/03, Principal investigator, Grant-in-Aid for Scientific Research (C), Doshisha University
• Research on personalization of spoken-dialogue-based computer-assisted-language-learning system
  山本 誠一; 加藤 恒夫; 菅原 真理子
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), 2022/04 -2026/03, Grant-in-Aid for Scientific Research (B), Doshisha University
• Longitudinal analysis of English speech produced by Japanese children and automatic evaluation of prosody
  加藤 恒夫; 山本 誠一; 菅原 真理子
  日本語を母語とする小中学生の英語音声について身体的・知能的な発達，学習プログラム，言語的背景との関係性を明らかにするため，2016年から数十名規模の英語音声収録を継続してきた．2021年度は新型コロナウイルスが比較的収まった時期に，中学3年生約40名と小学2年生約60名の英語音声収録を再開した． 2019年度に収録を行った中学1年生37名には，国内で日本語による初等教育を受けた生徒(JP)，国内で日本語と英語によるバイリンガル初等教育を受けた生徒(BP)，外国で英語による初等教育を受けた生徒(EP)がバランスよく含まれ，英語の発音に明らかな違いがあった．そこで，無強勢母音の発音に焦点を当てて3群の比較分析を行った．分析の結果，EPは無強勢母音のスペクトル品質を強勢母音のそれと区別し，一方で無強勢母音の表記には強い影響を受けていなかった．JPは，無強勢母音のスペクトル品質を強勢母音のそれと区別できておらず，一方で無強勢母音の表記に強い影響を受けていた．BPはEPとJPの中間であったが，語によってEPに近い発音とJPに近い発音が確認された． 韻律自動評価手法について，任意の英単語に対して語彙強勢を踏まえた韻律評価を可能にするため，入力の時系列情報間の離れた依存関係を捉えられるニューラルネットワーク技術Transformerを用いる自動韻律評価手法を考案した．日本人大学生による英単語および英語短文発声において，英語母語話者による主観評価値との相関係数を従来の決定木に基づく手法に比べて大幅に改善した． 小学生の英語音声の分析成果について国内学会で2件発表し，自動韻律評価について国内学会で3件発表した．第二言語音声獲得に関する国際会議New Sounds 2022の採録通知も受けたがコロナ禍により現地参加が叶わないため採録を辞退した．, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2020/04 -2023/03, Coinvestigator, Grant-in-Aid for Scientific Research (C), Doshisha University
• The influence of the markedness on native English speakers' and English learners' production and perception of English lexical stress
  Mariko Sugahara
  2020年度は前年度までに収集した音声データおよびアンケート結果に基づいて、下記の通り2点論文を発表した。
  [1] Sugahara, Mariko. (2020). “Lexical Stress Assignment to Base, Inflected and Derived Words in English by Japanese and Seoul Korean Learners of English.” In Nobuaki Minematsu (ed.) Proceedings of the 10th International Conference on Speech Prosody 2020. pp. 905-909, DOI: 10.21437/SpeechProsody.2020-185. [2] Sugahara, Mariko. (2021). “The Prominence Degree of Word-Initial Pretonic Syllables with Full Vowels in English: An Introspective Rating Study.” 『言語研究の楽しさと楽しみ：伊藤たかね先生退職記念論文集』岡部玲子、その他（編）、開拓社
  上記の[1]では「英語の語強勢の位置判断を強勢の英語学習者たちがする際、母語の音韻体系で無標な語強勢/語アクセントのパターンに偏向した判断を下すのか」という問いに答えるものであり、母語の無標な語アクセントパターンに偏向するという結果となった。[2]は「第1強勢音節の直前の音節内の完全母音は、強勢ありと見なすべきなのか、なしと見なすべきなのか」という問いに関してであり、英語母語話者に実施したアンケート調査（内省判断）結果に基づき、有強勢と無強勢の中間として認識されていると論じた。, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2017/04 -2022/03, Principal investigator, Grant-in-Aid for Scientific Research (C), Doshisha University
• The influence of L1 prosodic systems on the perception of English stress patterns
  SUGAHARA Mariko
  This study has investigated whether Japanese speakers’ knowledge about lexical accent distribution in Japanese, i.e., L1’s phonological knowledge, influences their judgement of lexical stress locations in English (L2) words. Auditory perception experiments with English word stimuli, in which Japanese, English and Seoul Korean speakers participated, were carried out. English lexicon is dominated by word-initial stress and Seoul Korean has neither lexical stress nor accent. On the other hand, the most popular accent location in Japanese is the syllable that contains the ‘antepenultimate’ mora. Japanese speakers’ perception pattern in the experiments turned out to be different from other groups’ patterns, which is appropriately accounted for if we consider their perception influenced by their knowledge about the distribution of Japanese lexical accent., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2012/04 -2016/03, Grant-in-Aid for Scientific Research (C), Doshisha University
• The perception of English lexical stress and its acoustic cues : a comparison between Japanese learners of English and English native speakers
  SUGAHARA Mariko
  英語の語強勢の発話実験と知覚実験を行なった。発話実験(英語母語話者を対象では),第1強勢と第2強勢が,ピッチでは区別されない環境でも,長さで区別されているという結果が出た。知覚実験では,ピッチ情報の質と有無が,第1強勢,第2強勢,無強勢の判別に,どのような影響を及ぼすのかを,日本語母語英語学習者(普通,上級),バイリンガル話者,そして英語母語話者とで比較した。結果は以下の研究成果の欄を参照のこと。, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), 2006 -2008, Competitive research funding, Grant-in-Aid for Young Scientists (B), Doshisha University