ABOUT MATTHEW AJIBADE
My research sits at the intersection of phonetics, phonology, and speech perception, with a central focus on Yoruba and other understudied West African languages. I investigate how listeners with different language experiences- such as heritage speakers, second language learners, and native speakers- perceive and process complex phonological contrasts. A key strand of my work examines the perception of labial-velar stops, which are typologically rare sounds that offer rich insights into models of phonological representation and cross-linguistic speech processing.
Grounded in experimental methodologies, my research draws from acoustic analysis, behavioral perception tasks, and advanced statistical modeling. I am particularly interested in how language experience shapes the phonological grammar and the extent to which perceptual learning is influenced by native-language categories. My dissertation, supported by the NFMLTA-NCOLCTL Research Award, advances empirical and theoretical contributions to models of speech perception, including the Perceptual Assimilation Model (PAM), the Speech Learning Model (SLM), and Second Language Linguistic Perception (L2LP).
I earned my Ph.D. in Linguistics from Indiana University, where I specialized in phonological perception and African linguistics. Beyond my core phonological research, I also engage in work on Yoruba language pedagogy and the integration of digital tools- such as artificial intelligence- for teaching and learning African languages. I currently serve as a Visiting Lecturer in the African Studies Program at Indiana University, where I teach Yoruba language and culture and contribute to curriculum development and community engagement.
Research Interests
General Linguistics, Phonetics-Phonology, Phonological Acquisition, Labial-velars,
L2 & Heritage Phonology, African Languages and Linguistics, African Language Pedagogy
Recent Conference Presentations
May 2025. Ajibade, Matthew (2005, May 15-17). Perceptual comparison of voicing distinctions across labial-velar, labial, and velar stops. 56th Annual Conference on African Linguistics (ACAL). Twin Cities: MN: University of Minnesota.
April 2025. Ajibade, Matthew & Darcy, Isabelle & De Jong, Kenneth. CV transitions and L1 experience explain perceptual discrimination of Yoruba labial-velar stops. New Sounds. Toronto, Canada: University of Toronto.
April 2025. Ajibade, Matthew. Dídá Kọ́ńsonáátì Yorùbá Mọ̀: Ìyàtọ̀ Láàárín Àwọn Akẹ́kọ̀ọ́ Àkọ́kúntẹni àti Àwọn Akẹ́kọ̀ọ́ Elédè Kejì (Identification of Yoruba consonants: Distinctions between heritage and L2 learners). 2025 African Language Teachers Association (ALTA) Conference. Pittsburgh, PA: University of Pittsburgh.
April 2025. Ajibade, Matthew. AI-Driven Image Generation for African Language Pedagogy. 2025 African Language Teachers Association (ALTA) Conference. Pittsburgh, PA: University of Pittsburgh.
January 2025. Ajibade, Matthew & De Jong, Kenneth. Phonological experience and the perception of competing acoustic cues in labial-velar stops. 2025 Linguistic Society of America (LSA) Annual Meeting. Philadelphia, PA.
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Lab Membership
I am a member of the Second Language Psycholinguistics Lab and the Phonetics & Phonology reading (Phlegme) group.