Research

Overview

I am currently in the process of setting up my research laboratory at Rutgers University, so stay tuned for more information. I am affiliated with the Phonology and Field Research Laboratory (PhonoLab), and I am a former member of the Arizona Applied Phonetics Laboratory at the University of Arizona.

My main interests are in phonetics, laboratory phonology, and second language acquisition. A principle aim of my research is to better understand the relationship between language use and sound representation in the mind, as well as the structure of sound systems in human languages. Most of my research is conducted on bilinguals of varying proficiency and linguistic experience. Feel free to explore the tabs on this page if you are interested in knowing more about my research projects.

Current Projects

  • Longitudinal development of fine-phonetic detail in late learners ()
  • Language-specific perceptual normalization in adult L2 acquisition ()
  • Production/perception of English/Spanish coronal stops ()
  • Semantic predictability and speech rate effects in second language speech categorization ()
  • Morphosyntactic predictability ()

Previous Projects

  • Production/perception of switch dominance speakers of English ()
  • Selective adaptation ()

In press

Casillas, J. V. “Phonetic category formation is perceptually driven during the early stages of adult L2 development”. In: Language and Speech. DOI: https://doi.org/10.1177/0023830919866225.

Casillas, J. V. “The longitudinal development of fine-phonetic detail: Stop production in a domestic immersion program”. In: Language Learning.

Lozano-Argüelles, C, N. Sagarra, and J. V. Casillas “Slowly but surely: Interpreting facilitates L2 morphological anticipation based on suprasegmental and segmental information”. In: Bilingualism: Language and Cognition. DOI: https://doi.org/10.1017/S1366728919000634.

Recent Publications

Casillas, J. V. (2019). “Semantic processing triggers cross-linguistic interference during early phonetic category development”. In: ICPhS 19. Ed. by S. Calhoun, P. Escudero, M. Tabain and aul Warren. In Proceedings of the 19th International Congress of Phonetic Sciences. Melbourne, Australia 2019 (ISBN: 978-0-646-80069-1), pp. 3348-3352.

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Casillas, J. V. and M. Simonet (2018). “Perceptual categorization and bilingual language modes: Assessing the double phonemic boundary in early and late bilinguals”. In: Journal of Phonetics 71, pp. 51-64. DOI: https://doi.org/10.1016/j.wocn.2018.07.002.

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Sagarra, N. and J. V. Casillas (2018). “Suprasegmental information cues morphological anticipation during L1/L2 lexical access”. In: Journal of Second Language Studies 1.1, pp. 31-59. DOI: https://doi.org/10.1075/jsls.17026.sag.

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Bessett, R. M, J. V. Casillas, and M. Ramírez Martínez (2017). “Language choice and accommodation: Casual encounters in San Ysidro and Nogales”. In: Spanish in Context 14.1, pp. 78-98. DOI: https://doi.org/10.1075/sic.14.1.04bes.

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Llompart, M. and J. V. Casillas (2016). “Lexically driven selective adaptation by ambiguous auditory stimuli occurs after limited exposure to adaptors”. In: Journal of the Acoustical Society of America 139.5, pp. EL172-EL177. DOI: https://doi.org/10.1121/1.4951704.

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Casillas, J. V. and M. Simonet (2016). “Production and perception of the English /æ/-/ɑ/ contrast in switched-dominance speakers”. In: Second Language Research 32.2, pp. 171-195. DOI: https://doi.org/10.1177/0267658315608912.

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Casillas, J. V. (2015). “Production and perception of the /i/-/ɪ/ vowel contrast: The case of L2-dominant early learners of English”. In: Phonetica 72.2-3, pp. 182-205. DOI: https://doi.org/10.1159/000431101.

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Casillas, J. V., Y. Díaz, and M. Simonet (2015). “Acoustics of Spanish and English coronal stops”. In: ICPhS 18. Ed. by T. S. C. for ICPhS 2015. Proceedings of the 18th International Congress of Phonetic Sciences. University of Glasgow: Glasgow. http://www.icphs2015.info, ISSN: 241-0669, pp. 1-5.

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Simonet, M., J. V. Casillas, and Y. Díaz (2014). “The effects of stress/accent on VOT depend on language (English, Spanish), consonant (/d/, /t/) and linguistic experience (monolinguals, bilinguals)”. In: Speech Prosody 7. Ed. by N. Campbell, D. Gibbon and D. Hirst. Proceedings of the 7th international conference on Speech Prosody: Social and Linguistic Speech Prosody. Trinity College, Dublin. speechprosody2014.org, ISSN: 2333-2042, pp. 202-206.

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Casillas, J. V. and R. M. Bessett (2013). Cuadro de los rasgos distintivos y los alófonos del español [Table]. Ed. by R. A. N. Cedeño, S. Colina and T. G. Bradley. Georgetown University Press. <URL: https://github.com/jvcasill/rasgos_distintivos>.

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Casillas, J. V. (2013). “La fricativización del africado /tʃ/: actitudes lingüísticas cerca de la frontera”. In: Selected Proceedings of the 6th Workshop on Spanish Sociolinguistics. Ed. by A. M. Carvalho and S. Beaudrie. Somerville, MA: Cascadilla Proceedings Project. www.lingref.com, document #2867, pp. 177-188.

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Casillas, J. V. (2012). “La fricativización del africado /tʃ/ en el habla de las mujeres del sur de Arizona”. In: Divergencias: Revista de estudios lingüísticos y literarios 10.1, pp. 56-70.

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Casillas, J. V. (2010). “La vibrante múltiple intervocálica: los ejercicios de canto como ayuda a su pronunciación en español”. In: La Gaceta Hispánica de Madrid VIII. ISSN: 1886-1741.

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Casillas, J. V. (2009). “El uso de los refranes en El Quijote”. In: La Gaceta Hispánica de Madrid VIII. ISSN: 1886-1741.

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Submitted

Lozano-Argüelles, C, L. F. Arroyo, N. Rodríguez, E. Durand, J. J. G. Pozu, J. M. Rojas, J. Varela, N. de Rocafiguera, and J. V. Casillas Conceptually cued perceptual categorization in adult L2 learners.

In preparation

Casillas, J. V. Semantic processing affects L2 stop production in late learners.

Casillas, J. V. L1/L2 cue-weighting strategies in the perception of lexical stress.

Sagarra, N. and J. V. Casillas The use of lexical stress and vowel duration for morphological anticipation in L2 learners of Spanish.

Sagarra, N. and J. V. Casillas The use of stress in lexical access in early and late bilinguals.

Casillas, J. V. Community approaches to translating specialized terminology in linguistics: lingreference.org.

Presentations

Lozano-Argüelles, C., L. F. Arroyo, N. Rodríguez, E. Durand, J. J. G. Pozu, J. M. Rojas, J. Varela, N. de Rocafiguera, and J. V. Casillas (2019). Conceptually cued perceptual categorization in late bilinguals. Hispanic Linguistics Symposium, University of Texas at El Paso, El Paso, TX.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2019). Predicting the end: monolinguals, L2 learners and interpreters’ use of prosody to predict word endings. Hispanic Linguistics Symposium, University of Texas at El Paso, El Paso, TX.

Colina, S., J. V. Casillas, and Y. Díaz (2018). Syllabic Affiliation of Prevocalic Glides in Sonoran Spanish: Dialectal variation in syllabic affiliation. Hispanic Linguistics Symposium, University of Texas at Austin, Austin, TX.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2018). The use of lexical stress and vowel duration for morphological anticipation in L2 learners of Spanish. Hispanic Linguistics Symposium, University of Texas at Austin, Austin, TX.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2018). The time-course of verbal morphology anticipation: When interpreting experience makes a difference. International Symposium on Bilingual and L2 Processing in Adults and Children (ISBPAC). Universität Branschweig, Germany.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2017). Practice makes perfect. L2 morphological anticipation in simultaneous interpreters. International Symposium on Bilingualism. University of Limerick, Ireland.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2017). The Role of Stress in Morphological Anticipation: Evidence from Interpreters. Hispanic Linguistics Symposium, Texas Tech University, Lubbock, TX.

Sagarra, N., J. V. Casillas, and N. Rodríguez (2017). The use of stress in lexical access in early and late bilinguals. Hispanic Linguistics Symposium, Texas Tech University, Lubbock, TX.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2017). Anticipatory eye-movements in morphological prediction: Evidence from interpreters and bilinguals. Second Language Research Forum, The Ohio State University.

Sagarra, N. and J. V. Casillas (2017). Lexical stress predicts L1 and L2 morphosyntactic processing. 47th Linguistics Symposium on Romance Languages. University of Delaware, Newark, DE.

Casillas, J. V. (2017). The longitudinal development of fine-phonetic detail: Production and perception of Spanish stops in a stateside immersion context. 47th Linguistics Symposium on Romance Languages. University of Delaware, Newark, DE.

Casillas, J. V. (2017). Coronal stop production in Spanish heritage speakers. 4th National Symposium on Spanish as a Heritage Language. University of California at Irvine, Irvine, CA.

Casillas, J. V. (2016). Learning to hear fine-phonetic detail: Longitudinal development of language-specific speech perception in adults. Hispanic Linguistic Symposium. Georgetown University, Washinton D.C.

Simonet, M., J. V. Casillas, and D. Osborne (2016). Second language acquisition and the double perceptual boundary effect. Sound to Word in Bilingual and Second Language Speech Perception. University of Iowa, Iowa City, Iowa.

Casillas, J. V., Y. Díaz, and M. Simonet (2015). Acoustics of coronal stops in Spanish-English bilingual speech. Hispanic Linguistics Symposium. University of Illinois at Urbana-Champaign, Urbana, IL.

Bessett, R. M., J. V. Casillas, and M. R. Martínez (2014). Language Choice and Accommodation: Casual Encounters Along the U.S. Border. 7th Workshop on Spanish Sociolinguistics. University of Wisconsin-Madison, Madison, WI.

Casillas, J. V. (2013). Perception of English /i/-/ɪ/ tense/lax vowel contrast by early learners of English. Second Language Research Forum (SRLF). Brigham Young University. Provo, Utah.

Casillas, J. V. (2013). English-dominant early Spanish-English bilinguals production and perception of English tense lax vowel contrasts. Phonetics and Phonology in Iberia. Universidade de Lisboa, Lisbon. Portugal.

Casillas, J. V. (2013). La fricativización del africado /tʃ/: actitudes lingüísticas cerca de la frontera. 6th Workshop on Spanish Sociolinguistics. University of Arizona, Tucson, AZ.

Casillas, J. V. (2012). Los piojos, las pulgas y el canto… ¡oh my! Una segunda mirada a la teoría de Dunbar, el cotilleo y el papel de la música en la evolución del lenguage. 22nd Annual Symposium on Hispanic and Luso-Brazilian Literature, Language and Culture. University of Arizona, Tucson, AZ.

Casillas, J. V. (2011). La fricativización del africado /tʃ/ en el habla de las mujeres del sur de Arizona. 21st Annual Symposium on Hispanic and Luso-Brazilian Literature. University of Arizona, Tucson, AZ.

Casillas, J. V. (2011). Going mental with vocabulary: the use of iDevice applications in the classroom. Spanish Heritage Language Program Share Day. University of Arizona, Tucson, AZ.

Unrefereed Presentations

Casillas, J. V. (2017). Crossing borders? The status and future of Spanish in the U.S.. School of Spanish Round Table, Middlebury College, Middlebury, VT.

Sagarra, N., J. V. Casillas, C. Lozano-Argüelles, F. Eriksson, J. Uscamayta, and J. Overton (2017). Using lexical stress to predict inflectional morphology. Aresty Undergraduate Research Symposium. Rutgers University, New Brunswick.

Sagarra, N., J. V. Casillas, C. Lozano-Argüelles, and N. Rodríguez (2017). Eye-tracking reveals bilinguals use stress to predict morphology. 11th annual Perceptual and Cognitive Science Forum. Rutgers University, New Brunswick.

Poster presentations

Casillas, J. V. (2019). Semantic processing triggers cross-linguistic interference during early phonetic category development. The 19th International Congress of Phonetic Sciences (ICPhS).

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2018). Anticipación de morfología en hablantes de español como L2. II Congreso para profesionales de la educación bilingüe. Madrid, Spain.

Sagarra, N. and J. V. Casillas (2018). Prosodic cues facilitate morphological anticipation in monolinguals and bilinguals. International Symposium on Bilingual and L2 Processing in Adults and Children. Universität Braunschweig, Germany.

Lozano-Argüelles, C., N. Sagarra, and J. V. Casillas (2018). Anticipation in Professional Interpreters: Predicting Morphology. Bridging Attention and Prediction. Universitat de Barcelona, Spain.

Martínez, M. R. and J. V. Casillas (2016). La producción de la vibrante múltiple en los estudiantes de español como lengua heredada y en los estudiantes de español como lengua extranjera. 8th Workshop on Spanish Sociolinguistics. University of Puerto Rico, Río Piedras, PR.

Casillas, J. V., Y. Díaz, and M. Simonet (2015). Acoustics of Spanish and English coronal stops. Proceedings of the 18th International Congress of Phonetic Sciences. University of Glasgow, Glasgow, Scotland.

Simonet, M., J. V. Casillas, and Y. Díaz (2014). A contrastive acoustic analysis of dental and alveolar stops in Spanish and English. Hispanic Linguistics Symposium. Purdue University, West Lafayette, IN.

Simonet, M., J. V. Casillas, and Y. Díaz (2014). The effects of stress/accent on VOT depend on language (English, Spanish), consonant (/d/, /t/) and linguistic experience (monolinguals, bilinguals). Speech Prosody 7: Social and Linguistic Speech Prosody. Trinity College, Dublin, Ireland.

Casillas, J. V. and M. Simonet (2013). English-dominant early Spanish/English bilinguals perception of English tense-lax vowel contrasts. PPLC 13: Phonetics, phonology and languages in contact: Contact varieties, multilingualism, and second language learning. Paris, Délégation Générale Wallonie-Bruxelles.