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Pamela Souza
Department Chair; Professor; Fellow, Hugh Knowles Center
Communication Sciences & Disorders

Frances Searle Building
2240 Campus Drive
Evanston , IL 60208-2952

Pamela Souza

Pamela Souza directs an active laboratory whose members study aspects of aging, cognition, and speech perception, supported by funding from the National Institutes of Health. Her research interests include how individual hearing and cognitive abilities affect response to hearing aid signal processing, changes in hearing and cognitive abilities with age, communication in adverse (reverberant and noisy) environments, and the benefits of auditory training. Dr. Souza is a Fellow of the American Speech-Language-Hearing Association and serves on the Psychoacoustic and Perception Technical Committee of the ASA. She is a practicing clinical audiologist with focus on working with individuals with severe hearing loss, or who have had limited success with previous hearing aids. Her professional interests also include hearing assistive technology and tinnitus.


Hearing Aid Laboratory


PhDAudiology, Syracuse University
MSAudiology, Syracuse University
BSCommunication Disorders, University of Massachusetts

Recent Publications

Souza P, Arehart K, Schoof T, Anderson M, Strori D, Balmert L. (2019). Understanding variability in individual response to hearing aid signal processing in wearable hearing aids. Ear and Hearing. [Epub ahead of print].

Rallapalli V, Anderson M, Kates J, Balmert, L., Sirow L, Arehart K, Souza P. (2019). Quantifying the range of signal modification in clinically-fit hearing-aids. Ear and Hearing [Epub ahead of print].

Calcus A, Schoof T, Rosen S, Shinn-Cunningham B, Souza P. (2019). Switching streams across ears to evaluate informational masking of speech-on-speech. Journal of the Acoustical Society of America [Epub ahead of print]

Shen J, Sherman M, Souza P. (2019). Test administration methods and cognitive test scores in older adults with hearing loss. Gerontology. [Epub ahead of print]

Souza P. (2018). Cognition and hearing aids: What should clinicians know? Perspectives of the ASHA Special Interest Groups, 3, 43-50.

Souza P, Hoover E, Blackburn M, Gallun F. (2018). Characteristics of adults with severe hearing loss. Journal of the American Academy of Audiology, 29, 764-779

Souza P, Hoover E. (2018). The physiologic and psychophysical consequences of severe to profound hearing loss. Seminars in Hearing, 39, 349-363.

Shen J, Souza P. (2018). On dynamic pitch benefit for speech recognition in speech maskers. Frontiers in Psychology, 9:1967. doi: 10.3389/fpsyg.2018.01967

Souza P. Gallun F, Wright R. (in press). Predicting speech-cue weighting in older adults with impaired hearing. Journal of Speech, Language and Hearing Research.

Souza P, Wright R, Gallun F, Reinhart P. (2018). Reliability and repeatability of the speech cue profile. Journal of Speech, Language and Hearing Research, 61, 2126-2137.

Reinhart P, Zahorik P, Souza P. (2019). Interactions between digital noise reduction and reverberation: Acoustic and behavioral effects. Journal of the American Academy of Audiology, [Epub ahead of print].

Reinhart P, Zahorik P, Souza P. (2019). Effects of reverberation on the relationship between compression speed and working memory for speech-in-noise perception. Ear and Hearing, 40, 1098-1105.

Reinhart P, Souza P. (2018). Listener factors associated with individual susceptibility to reverberation. Journal of the American Academy of Audiology, 29, 73-82.

Recent Funding

National Institute on Deafness and Communication Disorders R01.Characterizing variability in hearing aid outcomes among older adults (principal investigator). 2017-2022.

National Institute on Deafness and Communication Disorders R01, Acoustic effects of WDRC amplification (principal investigator), 2016-2021.

National Institutes on Deafness and Communication Disorders K01. Investigating the relationship between directional microphones, compression, and working memory in realistic spatial conditions (sponsor; Varsha Rallapalli, principal investigator), 2019-2022.

Knowles Hearing Center. Foreign-accented speech-in-noise recognition: Talker intelligibility and linguistic complexity (co-investigator; Ann Bradlow, Northwestern Linguistics, principal investigator), 2018-2020.

The Alumnae of Northwestern University. Understanding foreign-accented speech in noise by hearing-impaired older adults (sponsor; Dorina Strori, postdoctoral investigator). 2018-2019.

Sonova USA, Inc. Clinical trial of Roger adaptive digital technology (principal investigator). 2019-2020.

Engineering and Physical Sciences Research Council, United Kingdom. Environment-aware Listener-Optimized Speech Processing for Hearing Enhancement in Real Situations (E-LOSPHERES). (consultant; Mark Huckvale, University College London, principal investigator). 2019-2022.


CSD 411 Evaluation and use of amplification systems
CSD 414 Advanced topics in amplification
CSD 521 Aging and cognition