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Position |
Professor |
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Degree |
Doctor of Philosophy(University of California, Los Angeles), Master of Arts(University of California, Los Angeles), Bachelor of Arts(Reed College) |
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Research Field |
Phonology, Psycholinguistics |
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External Link |
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Graduating School 【 display / non-display 】
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Reed College Faculty of Literature Graduated
- 1991.7
Graduate School 【 display / non-display 】
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University of California, Los Angeles Linguistics Department Doctor's Course Completed
- 2007.12
Campus Career 【 display / non-display 】
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KONAN UNIVERSITY Faculty of Letters Faculty of Letters Department of English Literature and Language Professor
2022.4
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KONAN UNIVERSITY Faculty of Letters Faculty of Letters Department of English Literature and Language Associate Professor
2015.4 - 2022.3
Papers 【 display / non-display 】
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The sound symbolism of size and speed in Japanese vehicle and Pokemon character names
Andrew Martin
甲南大学紀要・文学編 171 53 - 58 2021.3
Single Work
DOI： 10.14990/00003759
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Are Words Easier to Learn From Infant‐Than Adult‐Directed Speech? A Quantitative Corpus‐Based Investigation Reviewed
Adriana Guevara‐Rukoz, Alejandrina Cristia, Bogdan Ludusan, Roland Thiollière, Andrew Martin, Reiko Mazuka, Emmanuel Dupoux
Cognitive Science 42 ( 5 ) 1586 - 1617 2018.7
Joint Work
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Vowels in infant-directed speech: More breathy and more variable, but not clearer Reviewed
Kouki Miyazawa, Takahito Shinya, Andrew Martin, Hideaki Kikuchi, Reiko Mazuka
Cognition 2017.9
Joint Work
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Utterances in infant-directed speech are shorter, not slower
Andrew Martin, Yosuke Igarashi, Nobuyuki Jincho, Reiko Mazuka
COGNITION 156 52 - 59 2016.11
Joint Work
Publisher：ELSEVIER
It has become a truism in the literature on infant-directed speech (IDS) that IDS is pronounced more slowly than adult-directed speech (ADS). Using recordings of 22 Japanese mothers speaking to their infant and to an adult, we show that although IDS has an overall lower mean speech rate than ADS, this is not the result of an across-the-board slowing in which every vowel is expanded equally. Instead, the speech rate difference is entirely due to the effects of phrase-final lengthening, which disproportionally affects IDS because of its shorter utterances. These results demonstrate that taking utterance-internal prosodic characteristics into account is crucial to studies of speech rate. (C) 2016 Elsevier B.V. All rights reserved.
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Learnability of prosodic boundaries: Is infant-directed speech easier?
Bogdan Ludusan, Alejandrina Cristia, Andrew Martin, Reiko Mazuka, Emmanuel Dupoux
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 140 ( 2 ) 1239 - 1250 2016.8
Joint Work
Publisher：ACOUSTICAL SOC AMER AMER INST PHYSICS
This study explores the long-standing hypothesis that the acoustic cues to prosodic boundaries in infant-directed speech (IDS) make those boundaries easier to learn than those in adult-directed speech (ADS). Three cues (pause duration, nucleus duration, and pitch change) were investigated, by means of a systematic review of the literature, statistical analyses of a corpus of Japanese, and machine learning experiments. The review of previous work revealed that the effect of register on boundary cues is less well established than previously thought, and that results often vary across studies for certain cues. Statistical analyses run on a large database of mother-child and mother-interviewer interactions showed that the duration of a pause and the duration of the syllable nucleus preceding the boundary are two cues which are enhanced in IDS, while f0 change is actually degraded in IDS. Supervised and unsupervised machine learning techniques applied to these acoustic cues revealed that IDS boundaries were consistently better classified than ADS ones, regardless of the learning method used. The role of the cues examined in this study and the importance of these findings in the more general context of early linguistic structure acquisition is discussed. (C) 2016 Acoustical Society of America.
DOI： 10.1121/1.4960576
Presentations 【 display / non-display 】
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Mothers speak less clearly to infants than to adults: A comprehensive test of the hyperarticulation hypothesis
Andrew Martin, Thomas Schatz, Maarten Versteegh, Kouki Miyazawa, Reiko Mazuka, Emmanuel Dupoux, Alejandrina Cristia
Linguistic Society of America Annual Meeting
Event date： 2015.1
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Japanese mothers undo function word reduction when talking to infants
Andrew Martin, Keiichi Tajima, Reiko Mazuka
Boston University Conference on Language Development
Event date： 2014.11
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Speech rate and final lengthening in Japanese infant-directed speech
Andrew Martin, Yosuke Igarashi, Nobuyuki Jincho, Reiko Mazuka
Linguistic Society of America Annual Meeting
Event date： 2014.1
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対乳児発話の母音無声化
Andrew Martin, Akira Utsugi, Reiko Mazuka
日本発達心理学会
Event date： 2013.3
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Vowel devoicing in infant-directed Japanese: optimized for learning or understanding?
Andrew Martin, Akira Utsugi, Reiko Mazuka
Linguistic Society of America Annual Meeting
Event date： 2012.1
Grant-in-Aid for Scientific Research 【 display / non-display 】
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プロトレキシコンと日本語の獲得
2012.4 - 2015.3
JSPS Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research(C)
MARTIN Andrew
乳児においては、生後一年の間に自分の言語の音素システムの獲得がかなり進んでいるが、どのように獲得する
かは未だ明らかになっていない。
現在までに、乳児の音素獲得について二つの仮説が提案されている。まず第一の仮説はトップダウンと呼ばれる
方法である。トップダウンの学習法では、最初に語彙を学習し、そしてその語彙の知識を使用し音素を学習する
。第二の仮説はボトムアップと呼ばれる学習法である。ボトムアップの学習法では語彙を意識せずに一つ一つの
音素の統計的分布をもとにその言語の音素を学習する。
本研究では、日本語を学ぶ乳児がどういった情報を使用し、そしてその情報をどのように処理して、語彙と音素
を学習するかという疑問を大規模な日本語母子会話コーパスと乳児を対象とする実験により研究を進める。