Research Interests

Over the past several years, I have developed a research program in phonology guided by two overarching questions. First, how is phonological knowledge shaped in language-contact situations? I have explored this question primarily through studies of loanword phonology, focusing in particular on loanword accentuation in Japanese. Exploring the first question led me realize that a different angle is also needed to fully understand it, bringing me to the second question: How does phonological knowledge interact with the lexicon? To address this, I have turned to the study of accentuation in Sino-Japanese words. In addition to these projects, I have conducted several phonetics studies investigating how various factors influence the perception and production of speech sounds, with the broader goal of understanding the adaptability of these processes.

Publications

Journal Articles

• Katsuda, H. & Kang, Y. (Resubmitted). Speaking rate effects on Japanese vowel and consonant length contrasts. Journal of Phonetics. (Resubmitted after minor revision) [pdf]
• Breiss, C., Katsuda, H. & Kawahara, S. (Accepted). Modeling frequency-conditioned paradigm uniformity in Japanese voiced velar nasalization. Phonology. [pdf]
• Breiss, C., Katsuda, H. & Kawahara, S. (To appear). Token frequency in the grammar: a case study in Japanese Voiced Velar Nasalization. Phonology. [pdf]
• Katsuda, H. (2025). A probabilistic model of loanword accentuation in Japanese. Phonology. [pdf]
• Katsuda, H. & Sundara, M. (2024). English-learning infants developing sensitivity to vowel phonotactic cues to word segmentation. Developmental Science (brief paper). [pdf]
• Katsuda, H. & Steffman, J. (2022). Asymmetrical roles of segment and pitch accent in Japanese spoken word recognition. Journal of the Acoustical Society of America Express Letters, 2(6), 065201. [link] [pdf]
• Sundara, M., Zhou, Z. L., Breiss, C., Katsuda, H. & Steffman, J. (2022). Infants developing sensitivity to native language phonotactics: A Meta-analysis. Cognition, 221, 104993. [link] [pdf]
• Kandybowicz, J., Baron, B., Duncan, P. T. & Katsuda, H. (2021). Documenting the Ikpana Interrogative System. Journal of African Languages and Linguistics, 42(1), 63-100. [pdf]
• Steffman, J. & Katsuda, H. (2021). Intonational structure influences perception of contrastive vowel length: the case of phrase-final lengthening in Tokyo Japanese. Language and Speech, 64(4), 839-858. [link] [pdf]
• Kawahara, S., Katsuda, H. & Kumagai, G. (2019). Accounting for the stochastic nature of sound symbolism using Maximum Entropy model. Open Linguistics, 5, 109-120. [pdf]

Manuscripts

• Katsuda, H. Puigdelliura-Repiso, G., Zuraw, K. & Jo, J. (In prep.). Applying phonological processes in code-switched contexts. To be submitted to Laboratory Phonology.
• Sundara, M., Karaman, F., & Katsuda, H. (In prep.). Young infants rely on domain-specific information before domain-general transitional probability information to segment words. To be submitted to Psychological Science.

Books

• Kandybowicz, J., Baron, B., Duncan, P. T. & Katsuda, H. (2023). Ikpana Interrogatives. Oxford University Press. (OXFORD STUDIES IN AFRICAN LINGUISTICS)
• Kandybowicz, J., Baron, B., Duncan, P. T. & Katsuda, H. (In prep). Aspects of Ikpana Grammar. München: Lincom Publishers. (LINCOM STUDIES IN AFRICAN LINGUISTICS) (Proposal accepted: 8/4/2020)

Book Chapters

• Kang, Y., & Katsuda, H. Loanword phonology. (To appear). In Companion to Phonology, eds. Nasukawa, K., Samuels, B., Schwartz, G., & Törkenczy, M. Malden, MA.: Wiley Blackwell.

Conference Proceedings

• Katsuda, H. Puigdelliura-Repiso, G. & Zuraw, K. (2025). Phonological processes in code-mixed utterances: tapping across English-Spanish language boundaries. Proceedings of AMP 2023/2024. [pdf]
• Breiss, C., Katsuda, H. & Kawahara, S. (2024). Paradigm uniformity is probabilistic: evidence from velar nasalization in Japanese. Proceedings of WCCFL 39. Somerville, MA: Cascadilla Proceedings Project. [pdf]
• Breiss, C., Katsuda, H. & Kawahara, S. (2022). A quantitative study of voiced velar nasalization in Japanese. Proceedings of the 45th Penn Linguistics Conference, U. Penn Working Papers in Linguistics, 27.1. [pdf]
• Katsuda, H. & Steffman, J. (2021). Prominence-boundary interactions in speech perception: evidence from Japanese vowel length. Proceedings of the 1st International Conference on Tone and Intonation, 200-204. [pdf]
• Katsuda, H. & Steffman, J. (2020). Intonational cues to prosodic boundary influence perception of contrastive vowel length in Tokyo Japanese. Proceedings of the 10th International Conference on Speech Prosody, 56-60. [pdf]
• Katsuda, H. (2019). A preliminary model of Ikpana intonational phonology. Proceedings of International Congress of Phonetic Sciences 2019, 3817-3821. [pdf]