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Kaitlin Lansford

Associate Professor

Phone:
(850) 644-8443
Fax:
(850) 644-8994
Office:
Warren 507
Full Vita
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Dr. Kaitlin Lansford is an Associate Professor at Florida State University (FSU) in the School of Communication Science and Disorders and is also the director of the Motor Speech Disorders Lab (MSDLab) at FSU. Lab members of the MSDLab conduct research on dysarthric speech perception and adaptation. Exploiting the relationship between the degraded acoustic signal and the nature of the listener’s challenge has the potential to be a powerful paradigm for studying intelligibility deficits in dysarthria because results may point directly toward intervention targets, as well as inform theory on the perception of degraded speech. Her current work focuses on perceptual training, which offers a promising avenue for improving intelligibility of people with dysarthria by offsetting the communicative burden from the patient onto their primary communication partners.

Education

  • University of Arizona, B.S., 1999
  • Arizona State University, M.S., 2004
  • Arizona State University, Ph.D., 2012

Research Interests

Motor-Speech Disorders; Disordered and Degraded Speech Perception; Perceptual Learning; Childhood Apraxia of Speech

Teaching Interests

Motor speech disorders, research evaluation, neural bases of communication

Publications & Research

  1. Lansford, K. L., *Hirsch, M. E., Barrett, T. S., & Borrie, S. A. (in press). Cognitive predictors of perception and adaption to dysarthric speech in older adults. Journal of Speech, Language, and Hearing Research
  2. Borrie, S.A., Tetzloff, K.A., Barrett, T.S., & Lansford, K.L. (2024). Increasing motivation increases intelligibility benefits of perceptual training of dysarthric speech. American Journal of Speech-Language Pathology. https://doi.org/10.1044/2024_AJSLP-24-0019
  3. Borrie, S.A., *Hepworth, T.J., *Wynn, C., Barrett, T.S., Hustad, K.C., & Lansford, K.L. (2023). Perceptual learning of dysarthria in adolescence. Journal of Speech, Language and Hearing Research, 66(10), 3791-3803. https://doi.org/10.1044/2023_JSLHR-23-00231
  4. *Thompson, A., *Hirsch, M., Lansford, K.L., & Kim, Y. (2023). Vowel acoustics as predictors of speech intelligibility in dysarthria. Journal of Speech, Language and Hearing Research, 66(8S), 3100-3114. https://doi.org/10.1044/2022_JSLHR-22-00287
  5. Lansford, K.L., Barrett, T.S., & Borrie, S.A. (2023). Cognitive predictors of perception and adaptation to dysarthric speech in young adult listeners. Journal of Speech, Language, and Hearing Research, 66(1), 30-47. https://doi.org/10.1044/2022_JSLHR-22-0039
  6. Spencer, K., Amaral, J., & Lansford, K.L. (accepted). Perceptual subgroups in speakers with ataxic dysarthria: an auditory free-classification approach. Journal of Speech, Language and Hearing Research.
  7. *Hirsch, M., Thompson, A., Kim, Y., & Lansford, K.L. (2022). The reliability and validity of speech-language pathologists’ estimations of intelligibility in dysarthria. Brain Sciences, 12(8), 1011. https://doi.org/10.3390/brainsci12081011
  8. Borrie, S.A. & Lansford, K.L. (2021). A perceptual learning approach for dysarthria remediation: An updated review. Journal of Speech, Language and Hearing Research. 4(8), 3060-3073. https://doi.org/10.1044/2021_JSLHR-21-00012
  9. Borrie, S.A., Lansford, K.L., & Barrett, T.S. (2021). A Clinical Advantage: Experience informs recognition and adaptation to a novel talker with dysarthria. Journal of Speech, Language and Hearing Research. 64(5), 1503-1514. https://doi.org/10.1044/2021_JSLHR-20-00663
  10. *Hirsch, M., Lansford, K.L., Barrett, T.S., & Borrie, S.A. (2021). Generalized learning of dysarthric speech between male and female talkers. Journal of Speech, Language and Hearing Research, 64(2), 444-451. https://doi.org/10.1044/2020_JSLHR-20-00313
  11. Lansford, K.L., Borrie, S.A., Barrett, T.S., & Flechaus, C. (2020). When additional training isn’t enough: Further evidence that unpredictable speech inhibits adaptation. Journal of Speech, Language and Hearing Research, 63(6), 1700-1711. https://doi.org/10.1044/2020_JSLHR-19-00380
  12. Ingvalson, E. M., & Lansford, K. L. (2020). Older adults' perception of multiple speech types predicted by common cognitive factors. Acoustical Science and Technology, 41(1), 390- 393.
  13. Lansford, K.L., Borrie, S.A., & Barrett, T.S. (2019). Regularity matters: Unpredictable speech degradation inhibits adaptation to dysarthric speech. Journal of Speech, Language and Hearing Research, 62(12). https://doi.org/10.1044/2019_JSLHR-19-00055
  14. Utianski, R. L., Sandoval, S., Berisha, V., Lansford, K. L., & Liss, J. M. (2019). The effects of speech compression algorithms on the intelligibility of two individuals with dysarthric speech. American Journal of Speech-Language Pathology, 28, 195–203. https://doi.org/10.1044/2018_AJSLP-18-0081
  15. Lansford, K.L., Luhrsen, S., Ingvalson, E., & Borrie, S.A. (2018). Effects of familiarization on intelligibility of dysarthric speech in older adults with and without hearing loss. American Journal of Speech Language Pathology, 27, 91-98. doi:10.1044/2017_AJSLP-17-0090
  16. Borrie, S.A., Lansford, K.L., and Barrett, T.S. (2018). Understanding dysrhythmic speech: When rhythm does not matter and learning does not happen. Journal of the Acoustical Society of America, 143(5): EL379–EL385. https://doi.org/10.1121/1.5037620
  17. Borrie, S.A., Lansford, K.L., and Barrett, T.S. (2017). Generalized adaptation to dysarthric speech. Journal of Speech, Language, and Hearing Research, 60, 3110-3117, doi:10.1044/2017_JSLHR-S-17-0127.
  18. *Fletcher, A., Wisler, A., McAuliffe, M., Lansford, K., & Liss, J. M. (2017). Predicting intelligibility gains in dysarthria through automated speech feature analysis. Journal of Speech, Language, and Hearing Research, 60, 3058-3068. doi:10.1044/2017_JSLHR-S-16-0453
  19. *Fletcher, A. R., McAuliffe, M., Lansford, K., Sinex, D., & Liss, J. (2017). Predicting intelligibility gains in individuals with dysarthria from baseline speech features. Journal of Speech, Language, and Hearing Research, 60, 3043-3057. doi:10.1044/2016_JSLHR-S-16-0218
  20. Ingvalson, E., Lansford, K., Federova, V., & Fernandez, G. (2017). Receptive vocabulary, cognitive flexibility, and inhibitory control differentially predict older and younger adults' success perceiving speech by Talkers with Dysarthria. Journal of Speech, Language, and Hearing Research, 60, 3632-3641. doi:10.1044/2017_JSLHR-H-17-0119
  21. Ingvalson, E., Lansford, K.L., Federova, V., Fernandez, G. (2017). Cognitive factors as predictors of accented speech perception for younger and older adults. Journal of the Acoustical Society of America, 141(6), 4652-4659. doi: 10.1121/1.4986930
  22. Ingvalson, E., Lansford, K.L., Federova, V., Fernandez, G. (2017). Listeners' attitudes toward accented talkers uniquely predicts accented speech perception. Journal of the Acoustical Society of America, 141, EL234. https://doi.org/10.1121/1.4977583
  23. Borrie, S., Lansford, K. and Barrett, (2017). Rhythm perception and its role in perception and learning of dysrhythmic speech. Journal of Speech, Language, and Hearing Research, 60(3), 561-570. https://doi.org/10.1044/2016_JSLHR-S-16-0094.
  24. *Fletcher, A.R., McAuliffe, M.J., Lansford, K.L., Liss, J.M. (2017). Assessing vowel centralization in dysarthria: A comparison of methods. Journal of Speech, Language, and Hearing Research, 60(2), 341-354. https://doi.org/10.1044/2016_JSLHR-S-15-0355
  25. Lansford, K.L., Berisha, V., & Utianski R.L. (2016). Modeling listener perceptions of speaker similarity in dysarthria. Journal of the Acoustical Society of America. 139(6), EL209-EL215. https://doi.org/10.1121/1.4954384
  26. Lansford, K.L., Borrie, S., Bystricky, L. (2016). Use of crowdsourcing to assess the ecological validity of perceptual training paradigms in dysarthria. American Journal of Speech-Language Pathology, 25(2), 1-7. https://doi.org/10.1044/2015_AJSLP-15-0059
  27. *Fletcher, A.R., McAuliffe, M. J., Lansford, K.L., & Liss, J.M. (2015). The relationship between speech segment duration and vowel centralization in a group of older speakers. Journal of the Acoustical Society of America, 138(4), 2132-2139. https://doi.org/10.1121/1.4930563.
  28. Lansford, K.L. Liss, J.M. & Norton, R. (2014). Free classification of perceptually-similar speakers with dysarthria. Journal of Speech, Language and Hearing Research, 57(6), 2051-2064. https://doi.org/10.1044/2014_JSLHR-S-13-0177
  29. Lansford, K.L. & Liss, J.M. (2014). Vowel acoustics in dysarthria: Speech disorder diagnosis and classification. Journal of Speech, Language and Hearing Research, 57 (1), 57-67. https://doi.org/10.1044/1092-4388(2013/12-0262)
  30. Lansford, K.L. & Liss, J.M. (2014). Vowel acoustics in dysarthria: Mapping to perception. Journal of Speech, Language and Hearing Research, 57 (1), 68-80. https://doi.org/10.1044/1092-4388(2013/12-0263)
  31. Liss, J.M., Utianski, R.L. & Lansford, K.L. (2013). Cross-linguistic application of English-centric rhythm descriptors in motor speech disorders. FoliaPhoniatrica et Logopaedica, 65, 3-19, doi:10.1159/000350030.
  32. Lansford, K.L., Liss, J.M., Caviness, J.N., & Utianski, R.L. (2011). A cognitive-perceptual approach to conceptualizing speech intelligibility deficits and remediation practice in hypokinetic dysarthria. Parkinson’s Disease, 2011, Article ID 150962, 9 pages, doi:10.4061/2011/150962.
  33. Utianski, R., Lansford, K.L., Liss, J.M., & Azuma, T. (2011). The effects of topic knowledge on intelligibility and lexical segmentation of hypokinetic and ataxic dysarthria. Journal of Medical Speech Language Pathology, 19(4), 25-36.
  34. Liss, JM, White, L, Mattys S.L., Lansford, K.L., Spitzer, S., Lotto, AJ & Caviness, JN (2009). Quantifying speech rhythm deficits in the dysarthrias. Journal of Speech, Language, and Hearing Research, 52 (5), 1334-1352. https://doi.org/10.1044/1092-4388(2009/08-0208)
  35. Spitzer, S., Liss, JM, Dorman, M., Spahr, A., & Lansford, K. (2009). The use of fundamental frequency for lexical segmentation in cochlear implants. Journal of the Acoustical Society of America-Express Letters, 125 (6), 236-241. https://doi.org/10.1121/1.3129304

*Publications marked with an asterisk are based on research conducted by graduate students under my sole or joint supervision.

Grants & Awards

Extramural Awards

  1. Lansford, K.L. (Role: co-PI; S. Borrie). “Listener training for improved intelligibility of people with Parkinson’s disease.” NIH/NIDCD, 1R01DC020930-02. Grant period: July 2024 – June 2029. Amount $2.2 million.
  2. Lansford, K.L. (Role: PI) “Speaker and listener strategies to improve intelligibility in Parkinson’s disease.” Parkinson's Foundation Impact Award, PF-IMP-1045942; Grant period: July 2023–June 2025. Amount $150,000
  3. Lansford, K.L. (Role: co-PI; S. Borrie). “Perceptual training for improved intelligibility of dysarthric speech.” NIH/NIDCD, R21DC018867, Grant period 7/20-6/23. Amount $275,000
  4. Lansford, K.L. (Principal Investigator). "Use of crowdsourcing to assess the ecological validity of perceptual learning paradigms in dysarthria." ASHFoundation, New Century Scholars Research Grant. Awarded: November, 2014. Amount $10,000
  5. Lansford, K.L. (Principal Investigator). “Perceptual similarity in dysarthria and the implications for learning.” ASHFoundation, Speech Science Research Grant supported by the Dennis Klatt Memorial Fund. Awarded: November, 2012. Amount: $5,000
  6. Lansford, K.L. (Principal Investigator; Sponsored by J. Liss). “Framework for a perceptual taxonomy of dysarthric speech.” National Institute of Health, National Institute on Deafness & other Communication Disorders 1F31 DC010093. Award period: May 1, 2011-April 30, 2012. Amount: $30,690.

Intramural Awards

  1. Lansford, K.L. (PI). “Listener-targeted training for improved understanding of dysarthric speech.” Committee on Faculty Research Support, Council on Research & Creativity, Florida State University. Project cycle: 2022-2023. Amount: $20,000.
  2. Lansford, K.L. (Principal Investigator). “Perceptual consequences of similar-sounding speakers with dysarthria.” Committee on Faculty Research Support, Council on Research & Creativity, Florida State University. Project duration: May 2014-August 2014. Amount: $14,000.
  3. Lansford, K.L. (Principal Investigator). “Perceptual similarity in dysarthria.” First-Year Assistant Professor award, Council on Research & Creativity, Florida State University. Project duration: May 2013-August 2013. Amount: $20,000.

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