All Stories

  1. Evaluating the Validity of Visual Analog Scales for Measuring Intelligibility in Spontaneous Speech

    Article • Journal of Speech Language and Hearing Research, September 2026, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden, Nathaniel Cline

  2. Paired-Comparison Versus Cross-Sectional Approaches for Assessing Longitudinal Speech Change in Parkinson's Disease Following Deep Brain Stimulation of the Subthalamic Nucleus

    Article • American Journal of Speech-Language Pathology, August 2026, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden, Daniel Corcos

  3. Different Responses to Loud, Clear, and Slow Speech in Parkinson’s Disease

    Article • American Journal of Speech-Language Pathology, February 2026, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden, Daniel Kim

  4. Amplitude Distribution Characteristics of the Tongue, Lower Lip, and Jaw in Talkers With Dysarthria Due to Parkinson's Disease

    Article • Journal of Speech Language and Hearing Research, February 2026, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  5. Extended High-Frequency Hearing Thresholds and Categorical Loudness Scaling in Parkinson's Disease

    Article • Journal of Speech Language and Hearing Research, January 2026, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  6. Automated Scoring of the Speech Intelligibility Test Using Autoscore

    Article • American Journal of Speech-Language Pathology, December 2024, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  7. Progress Toward Estimating the Minimal Clinically Important Difference of Intelligibility: A Crowdsourced Perceptual Experiment

    Article • Journal of Speech Language and Hearing Research, October 2024, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  8. Lexical Characteristics of the Speech Intelligibility Test: Effects on Transcription Intelligibility for Speakers With Multiple Sclerosis and Parkinson's Disease

    Article • Journal of Speech Language and Hearing Research, March 2023, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  9. Clear Speech Variants: An Investigation of Intelligibility and Speaker Effort in Speakers With Parkinson's Disease

    Article • American Journal of Speech-Language Pathology, November 2022, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  10. Minimally Detectable Change of Speech Intelligibility in Speakers With Multiple Sclerosis and Parkinson's Disease

    Article • Journal of Speech Language and Hearing Research, May 2022, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  11. Intelligibility Across a Reading Passage: The Effect of Dysarthria and Cued Speaking Styles

    Article • American Journal of Speech-Language Pathology, January 2022, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  12. Investigating Acoustic Correlates of Intelligibility Gains and Losses During Slowed Speech: A Hybridization Approach

    Article • American Journal of Speech-Language Pathology, June 2021, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  13. Erratum

    Article • Journal of Speech Language and Hearing Research, September 2018, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  14. Separate and Combined Influence of Cognitive Impairment and Dysarthria on Functional Communication in Multiple Sclerosis

    Article • American Journal of Speech-Language Pathology, August 2018, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  15. Clear Speech Variants: An Acoustic Study in Parkinson's Disease

    Article • Journal of Speech Language and Hearing Research, August 2016, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  16. Comparison of Intelligibility Measures for Adults With Parkinson's Disease, Adults With Multiple Sclerosis, and Healthy Controls

    Article • Journal of Speech Language and Hearing Research, April 2016, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden, Kaila Stipancic

  17. Hybridizing Conversational and Clear Speech to Investigate the Source of Increased Intelligibility in Speakers With Parkinson's Disease

    Article • Journal of Speech Language and Hearing Research, August 2014, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  18. Impact of Clear, Loud, and Slow Speech on Scaled Intelligibility and Speech Severity in Parkinson's Disease and Multiple Sclerosis

    Article • Journal of Speech Language and Hearing Research, June 2014, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  19. Vowel Acoustics in Parkinson's Disease and Multiple Sclerosis: Comparison of Clear, Loud, and Slow Speaking Conditions

    Article • Journal of Speech Language and Hearing Research, October 2013, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  20. Intelligibility of Clear Speech: Effect of Instruction

    Article • Journal of Speech Language and Hearing Research, October 2013, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  21. Acoustics of Clear Speech: Effect of Instruction

    Article • Journal of Speech Language and Hearing Research, December 2012, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden

  22. Perceptual Measures of Speech From Individuals With Parkinson’s Disease and Multiple Sclerosis: Intelligibility and Beyond

    Article • Journal of Speech Language and Hearing Research, August 2012, American Speech-Language-Hearing Association (ASHA)

    Dr. Kris Tjaden