Student Research


Doctoral students in the School of Communication Sciences and Disorders are required to complete and defend a research project prior to their graduation. Robyn has mentored 8 successful Ph.D. candidates, and has directed several Au.D. and M.A. student research projects at the University of Memphis. All of these students have produced research that has contributed to the mission of the HARL.

Completed Dissertations

Jingjing Xu

"Interactions between cognition and hearing aid compression release time: Effects of linguistic context of speech test materials on speech-in-noise performance." (2012)

Currently, Dr. Xu is a research audiologist at Starkey Laboratories, Minneapolis, MN

Kathryn Schwartz

"The relationship between acceptable noise levels and hearing aid success measured using a multi-dimensional approach." (2011)

Currently, Dr. Schwartz holds a faculty position at Old Dominion University, Norfolk, VA

Jani Johnson

"Influence of culture on appraisal of acquired hearing impairment." (2011)

Currently, Dr. Johnson holds a faculty position at the University of Memphis, Memphis, TN

Greg Flamme

"The relationships between direction and distance hearing and other auditory traits: a multitrait-multimethod evaluation. (2000)

Currently, Dr. Flamme holds a faculty position at Western Michigan University, Kalamazoo, MI

Izel Rivera

"The effects of simulated reverberation on speech understanding for several talkers." (1995)

Currently, Dr Rivera holds a position at the Harry S. Truman Memorial Veterans’ Hospital, Colombia, MO

Christine Gilmore Eubanks

"Effects of changes in SSPL90 on hearing aid performance." (1990)

Currently, Dr. Eubanks is the director of the VCU Hearing Center at Virginia Commonwealth University, Richmond, VA

D. Michael McDaniel

"Evaluation of the Speech Intelligibility Rating Test in Hearing Aid Selection." (1988)

Currently, Dr. McDaniel holds a faculty position at Arkansas State University, Jonesboro, AR

Janet Bisset

"Identification of candidates for binaural hearing aids using a paired comparison procedure." (1982)

Currently, Dr. Bisset holds a faculty position at Marywood University, Scranton, PA


Au.D. Research

Boudreaux, L., Lucks Mendel, L., & Cox, R. "Norms for the Reading Span Test: English version." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2015.

Breitbart, D., Xu., J., Johnson, J., & Cox, R. "Is there a preference between hearing aids and personal sound amplification products (PSAPs)?" Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2014.

Pendergraft, P., and Cox, R. "Evaluating two measures of listening effort." Presented at the Au.D. Student Research Colloquium, Memphis, TN, May, 2013.

Vineyard, W., and Cox, R. "An assessment of the validity of a subjective hearing aid verification procedure."  Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2012.

Miller, M., and Cox, R. "Word In Context Intelligibility Test (WICIT) normative data and comparison to other tests." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2011.

Kharlamova, A., and Cox, R. "Can performance-intensity functions reveal optimal release time in listeners with high cognitive ability?" Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2010.

Lee, A., and Cox, R. "Functioning of directional microphones and digital noise reduction in hearing aids: Objective versus subjective measures." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2009.

Dawkins, S., and Cox, R. "Verification of soft speech amplification in hearing aid fitting: A comparison of methods." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2007.

Dawkins, S., and Cox, R. "Verification of soft speech amplification: A comparison of methods". Refereed poster presented at the Annual Meeting of the American Auditory Society, Scottsdale, AZ, March, 2008.

Birath, A., and Cox, R. "Comparison of two speech-in-noise tests for younger and older listeners." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2006.

Johnson, J., Alexander, G., and Cox, R. "APHAB norms for WDRC hearing aids." Presented at the Au.D. Student Research Colloquium, Memphis, TN, 2006.

Johnson, J., Cox, R., & Alexander, G. "APHAB norms for WDRC hearing aids". Refereed poster presented at the annual meeting of the American Auditory Society, Scottsdale, AZ, March, 2006.

Jarvis, K., and Cox, R. "The occlusion effect: Physical measurement and self-report." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2004.

Logan, W., and Cox, R. "Evaluating the effects of a post-fitting aural rehabiltiation program for adults." Presented at the Au.D. Student Research Colloquium, Memphis, TN, April, 2004.