Dr. HyunJoo Yoo

Assistant Professor


  • PhD, Communication Sciences & Disorders, The University of Memphis, 2018
  • MS, Speech & Language Pathology, Yonsei University, 2008
  • BA, Psychology, Korea University, 2005

Research Areas

  • Early vocal/affect development
  • Caregiver-infant interaction
  • Acoustic analysis of infant vocalizations
  • Cross-cultural differences in vocal interaction
  • Mechanisms of conversational turn-taking

Selected Publications

  • Yoo, H., & Ha, S. (2021). Infant vocalizations and early home language environment. Communication Sciences & Disorders, 26(2), 263-273.
  • Yoo, H., Oller, D. K., & Ha, S. (2021). Early emergence and development of protophones in the first year of life, Communication Sciences & Disorders, 26(1), 1-12. DOI: https://doi.org/10.12963/csd.20786
  • Ha, S., Johnson, C. J., Oller, D. K., & Yoo, H. (2021). Cross-linguistic comparison of utterance shapes in Korean-and English-learning children: An ambient language effect. Infant Behavior and Development, 62, 101528.
  • Long, H. L., Bowman, D. D., Yoo,  H., Burkhardt-Reed, M. M., Bene, E. R., Oller, D. K . (2020). Social and endogenous infant vocalizations. PLoS ONE, 15(8): e0224956. https://doi.org/10.1371/journal.pone.0224956
  • Oller, D. K., Griebel, U., Bowman, D. D., Bene, E., Long, H. L., Yoo, H., Ramsay, G. (2020). Infant boys are more vocal than infant girls. Current Biology30(10), R426-R427.
  • Oller, D.K., Caskey, M., Yoo, H., Bene, E. R., Jhang, Y., Lee, C-C., Bowman, D. D., Long, H. L., Buder, E. H., & Vohr, B. (2019). Preterm and full term infant vocalization and the origin of language. Scientific Reports, 9:14734. https://doi.org/10.1038/s41598-019-51352-0
  • Yoo, H., Buder, E. H., Bowman, D. A. & Bidelman, G. M., & Oller, D. K. (2019). Acoustic correlates and adult perceptions of distress in infant speech-like vocalizations and cries. Frontiers in Psychology, 10:1154.doi: 10.3389/fpsyg.2019.01154
  • Farran, L. K., Yoo, H., Bowman, D. A., & Oller, D. K. (2019). Temporal Coordination in Mother-Infant Vocal Interaction: A Cross-Cultural Comparison, Frontiers in Psychology, 10:2374. doi: 10.3389/fpsyg.2019.02374