Speech and Hearing Science Commons^™

Seeing Voices: A Dynamic, Interprofessional Approach To Teaching Performing Arts And Speech-Language Pathology Students About Vocal Anatomy And Physiology, Deborah Hersh, Luzita Fereday, Fiona Palmer, David Hall, Pedro Amarante Andrade, Priscilla Cornelius, Charn Nang, Jane White

Research outputs 2022 to 2026

Objectives: Seeing Voices was an interprofessional, technology-enabled, large-scale, teaching and learning event developed to address the need to improve voice students’ knowledge of laryngeal anatomy and physiology toward understanding and maintaining vocal health. Seeing Voices trialed a novel interprofessional educational approach, collected both quantitative and qualitative data about student experiences of laryngostroboscopic examination, and built a databank of laryngeal recordings for future student learning. Methods: Seeing Voices involved two 3-hour seminars in a large, university lecture space, run by an interprofessional team (speech-language pathologists, vocal coach, Ear Nose and Throat consultant) with quality equipment projecting laryngeal images to large screens …

Counselors’ Experiences Of The Alliance In Videoconference Supervision: The Role Of Nonverbals, John E. Trenery, Azra Karajic Siwiec, Randall L. Astramovich

Journal of Counselor Preparation and Supervision

The role of nonverbal immediacy and intimacy in shaping the supervisory alliance during videoconference-based clinical supervision is understudied. Using a generic qualitative research design, data were collected from 15 practicing counselors through semi-structured interviews. Thematic analysis identified six primary themes, highlighting both the perceived barriers and the essential role of nonverbal cues, as well as the need for amplified behaviors in video-based interactions. The findings point to significant gaps in telesupervision training and introduce a novel framework to strengthen telepresence in videoconference supervision. This study offers actionable insight for educational institutions and governing bodies, emphasizing the importance of targeted curricula …

Caregivers' Experiences Of Assessment And Treatment For Their Child With Childhood Apraxia Of Speech: An International Questionnaire Study, Donna Claire Thomas, Maryane Gomez, Angela Muis, Nathan Trezise, Eliza Williamson, Julie Case, Elizabeth Murray, Maria Irene Grigos, Jenya Iuzzini-Seigel, Shelley L. Velleman

Speech Pathology and Audiology Faculty Research and Publications

Purpose: The aim of this study was to understand caregivers' preferences and experiences with diagnosis and treatment of childhood apraxia of speech (CAS).

Method: Caregivers of children with CAS completed a 70-item online survey that explored demographics, initial concerns, the CAS diagnostic process, speech therapy goals, and preferred and received speech therapy service delivery (session frequency, length, and context). Quantitative data were analyzed descriptively and with inferential statistics; qualitative data were analyzed using content analysis.

Results: One hundred sixty-one caregivers participated, mostly from the United States, Australia, and Canada. A total of 72% of caregivers had concerns about their child's …

Gender, And Socioeconomic Status In School-Based Speech-Language Pathology Decision-Making For Adolescents With Traumatic Brain Injury: A Critically Appraised Topic, Geneva Renee Toledo

Selected Full-Text Master Theses 2021-

Purpose: Adolescents are at greater risk for traumatic brain injury (TBI), and TBI-related symptoms may contribute to disciplinary actions that increase their risk of entering the school-toconfinement pipeline. Given the disproportionate representation of racially marginalized male adolescents within this pipeline, this critically appraised topic (CAT) examined how race, gender, and socioeconomic status may influence school-based speech-language pathology (SLP) services and clinical decision-making following TBI. Method: A structured search of five electronic databases was conducted to identify studies examining speech-language pathologists’ (SLPs’) clinical decision-making and management of adolescents with TBI in relation to race, gender, and socioeconomic status. Relevant studies were …

The Effects Of Speak Out! On Hypokinetic Dysarthria In Individuals With Idiopathic Parkinson’S Disease, Linden King

Murray State Theses and Dissertations

The purpose of this single subject research study was to prove the efficacy of SPEAK OUT! therapy in improving loudness, rate of speech, and quality of life for individuals who have hypokinetic dysarthria due to Parkinson’s Disease. In this A-B-A design, five weeks of SPEAK OUT! therapy was provided twice a week to four individuals with a diagnosis of Parkinson’s disease. Results showed an increase in loudness in conversation and improved quality of life measured by statistical and visual analysis. These findings contribute to the research behind the use of SPEAK OUT! therapy for individuals with HKD due to PD.

Single Intratympanic Injection Of Proprietary Brain-Derived Neurotrophic Factor (Oto-413) In Subjects With Speech-In-Noise Hearing Impairment: A Randomized, Dose Escalating, Double-Blind, Placebo-Controlled Phase 1/2 Study, Alan C. Foster, Jeffery J. Anderson, David R. Moore, Morgan Oktela Fuentes, Yiwei Wang, Peter G. Volsky, K. Paul Boyev, Victoria A. Sanchez

Department of Otolaryngology (ENT) Faculty Publications

Purpose

To evaluate the safety and tolerability and exploratory efficacy of OTO-413, an intratympanic-administered, sustained release formulation of brain-derived neurotrophic factor (BDNF) in a thermoreversible gel, in participants with speech-in-noise hearing difficulties.

Methods

This was a single dose, dose-ascending, randomized, double-blind, Placebo-controlled Phase 1/2 study conducted at 7 enrolling clinical sites in the U.S. 110 participants (56% female) enrolled had self-reported speech-in-noise (SIN) difficulties that were confirmed by a SIN test and were randomized to OTO-413 or Placebo. OTO-413 dose range was escalated from 0.01 mg to 1.5 mg within 7 Cohorts. Safety evaluations included monitoring for treatment-emergent adverse events, …

Independence Of Spectral Contrast Effects Across Different Frequency Regions In Speech Perception, Christian E. Stilp, Matthew B. Winn

Speech Pathology and Audiology Faculty Research and Publications

Identification of speech sounds is influenced by spectral contrast effects (SCEs), the perceptual magnification of spectral differences between successive sounds. SCEs result in the categorization of a target sound being biased away from spectral properties in the preceding acoustic context. Given remarkable consistency in the magnitudes of these contrast effects within the same frequency region, it was hypothesized that they would also show stable relationships across different frequency regions. In this study, normal-hearing listeners’ phoneme categorization and contrast effects were assessed where phonetic contrasts were driven by changes in low-frequency F₁ (“big”-“beg” continuum), mid-frequency F₃ (“dot”-“got”), or high-frequency …

Guitar Amplifier Directivity, Rachel C. Edelman, Brian E. Anderson, Samuel D. Bellows, Timothy W. Leishman

Directivity

No abstract provided.

Beyond Mean Length Of Utterance: Novel Measures For Characterizing The Spoken Language Of Autistic Children, Janine Mathee-Scott, Courtney E. Venker

Speech Pathology and Audiology Faculty Research and Publications

Purpose:

Mean length of utterance (MLU) is a common measure of expressive language complexity in young children, including autistic children. However, means, by nature, obscure some information about spread and variability in data. Thus, we aimed to examine a new approach to characterizing linguistic complexity in autistic children by investigating the validity of two novel measures—range of length of utterance (RLU), standard deviation of length of utterance (SDLU)—alongside established measures: MLU and total utterances (TU).

Method:

Participants were 40 autistic children (12 girls, 28 boys; M_age = 41.78 months). Children participated in 10-min, play-based language samples with their caregivers. …

Exploring Tonal Focus: Qualitative Perspectives And Acoustic Correlates In Slps And Singers, Lily C. Carpenter

Theses and Dissertations--Communication Sciences and Disorders

Tonal focus is a complex construct that has variable definitions and interpretations across professions and within existing literature. Although tonal focus is widely described both clinically and pedagogically, both fields differ in their perspectives and goals related to the concept. This study aims to understand singers’ and speech language pathologists’ (SLP) conceptual perception and acoustic demonstration of tonal focus. Eleven SLPs and six singers were recruited to participate in the study. Participants completed an interview with the primary investigator and were recorded producing forward, neutral, and backward tonal focus in various contexts. Acoustic and qualitative analysis indicated that tonal focus …

Integrating Perspectives Of People With Aphasia: A Holistic Approach To Community Aphasia Groups Within An Intensive Comprehensive Aphasia Program, Mckinlee A. Mihelish

Graduate Student Theses, Dissertations, & Professional Papers

Introduction: People with aphasia (PWA) experience chronic communication deficits that impact daily life. Community Aphasia Groups (CAGs) are commonly used to address these challenges and have demonstrated psychosocial and communicative benefits; however, they lack standardized structure and are implemented with variability across settings. Additionally, much of the existing research focuses on group-level outcomes rather than participant-driven priorities, limiting clinicians’ ability to tailor interventions. This study examined what PWA want from CAG participation and how these priorities may change over time.

Methods: This quantitative study investigated priority changes among PWA participating in a CAG within a summer 2025 Intensive Comprehensive Aphasia …

Communication Sciences And Disorders Faculty Perspectives On Collaborating With Students As Instructional Partners, Bryanna Cosman

Master's Theses and Doctoral Dissertations

Student-faculty partnerships, such as instructional partnerships, have been shown to benefit both students and faculty members who engage in them. This form of collaboration does not commonly occur at public, comprehensive universities, especially in the field of communication sciences and disorders (CSD). The purpose of this study was to understand the perspectives of CSD faculty on collaborating with students as instructional partners (IP), as there is limited research on it. IPs are students who have successfully taken a class in the recent past, attend the course in a subsequent semester, and meet after each class with the professor to discuss …

How Autistic Children Define Novel And Real Words, Henry James Tomiser

Graduate Research Theses & Dissertations

Word knowledge is highly valuable to Autistic individuals, and although much research has characterized Autistic children’s vocabulary breadth (i.e., the number of lexical entries), less attention has been paid to vocabulary depth (i.e., the richness with which one understands a given word). In this exploratory post-hoc study, 11 Autistic children (one assigned female at birth) participated in novel and real word learning paradigms in which child-friendly referents were paired with CVCV word forms. Participants were then asked to provide open-ended definitions of the words. Definitions were parsed into meaningful subunits, or semantic features. Semantic features were coded by type of …

Integrating Hippotherapy Into Interprofessional Aphasia Rehabilitation: A Feasibility Pilot Study, Bethany H. Wenger

Graduate Student Theses, Dissertations, & Professional Papers

Background and Significance: Stroke remains a leading cause of disability in the United States, affecting over 2.5 million individuals annually. Stroke-related motor and communication deficits often co-occur, increasing challenges for recovery, increasing social isolation, depression, and dependency. Hippotherapy has emerged as a novel treatment approach for neurorehabilitation; however, its application within interprofessional models for individuals with stroke-related motor and communication impairments remains underexplored. This study examines the feasibility, fidelity, and acceptability of an interprofessional intervention using hippotherapy for adults with chronic post-stroke aphasia, the purpose of which is to generate methodological guidance for future controlled trials.

Methods: A non-randomized, single-group …

Modifiable Risk Factors And Hearing Loss: The National Health And Nutrition Examination Survey 1999–2020, Yulu Zheng, Tingting Li, Zhiyuan Wu, Yahong Zhu, Zheng Guo, Xingang Li

Research outputs 2022 to 2026

Objective: To explore the associations between major modifiable risk factors and hearing loss.

Methods: This serial cross-sectional study was conducted within the National Health and Nutrition Examination Survey 1999–2020 in the United States. Associations were assessed using modified Poisson regression and within-sample population attributable fraction (PAF).

Results: Eight thousand seven hundred and seventy adults aged 40–85 years were included in the analyses, the mean (SD) age was 58.0 (11.7) years, with 4002 men (45.6%). Hearing loss was associated with low educational attainment with prevalence ratio 1.23, 95% confidence interval (1.15, 1.31); low income 1.11 (1.04, 1.19); diabetes 1.10 (1.03, 1.18); …

Prosodic Comparisons Between Speech And Music For Different Emotions, Reagan Brothers

Honors Projects

This study compares the prosodic acoustic characteristics between different emotional expressions in speech and clarinet playing and evaluates the similarities in prosody between these two domains. The prosodic features analyzed include pitch, loudness, and duration, which are the psychoacoustic terms referring to fundamental frequency [f_o], intensity, and rate of time. The American folksong “I’ve Been Working on the Railroad” was both spoken and performed with three emotions: neutral, sad, and happy. The first comparison was how each prosodic characteristic compared across the three different emotions within each domain, and then prosody was compared across the two domains …

A Clinical Training Program For Auditory-Perceptual Rating Of Connected Speech In Aphasia., Marianne Casilio, Manaswita Dutta, Katherine Bryan, Kelly Crouch, Zachary Dewall, Ilana Feld, Jennifer Kile, Keely Mcmahan, Jacqueline Samora, Kiiya Shibata, Stacey Steel, Multiple Additional Authors

Speech and Hearing Sciences Faculty Publications and Presentations

Although discourse analysis has been receiving growing interest among aphasia researchers and speech-language pathologists (SLPs), several key challenges, such as limited time, insufficient training, and a lack of accessible tools, preclude its practical application in clinical settings. To address these barriers, we developed and evaluated a clinical training program for Auditory-Perceptual Rating of Connected Speech in Aphasia (APROCSA; Casilio et al., 2019), a time-efficient and psychometrically robust transcriptionless system for quantifying a range of speech-language impairment features.

Exploring Future Educators’ Roles In Classroom Aac Use: Insight Into Knowledge, Skills, And Attitudes, Katrina M. King

Honors College Theses

The United States public school system requires the provision of a free and appropriate public education (FAPE) in the least restrictive environment (LRE) for qualifying students with disabilities (U.S. Department of Education, n.d.). Speech, language, and hearing related disabilities are among the qualifying categories (U.S. Department of Education, n.d.). Students with these disabilities may have complex communication needs (CCN), or significant limitations in their speech, language, and communication abilities (Communication Rights Australia, 2018). Augmentative and alternative communication (AAC), a type of assistive technology, offers support for these students, however, several barriers inhibit full communicative participation (American Speech-Language-Hearing Association [ASHA], n.d.-a). …

A Novel Method For Examining Autistic Children’S Comprehension Of Individual Words Produced Within Delayed Echolalia: A Proof-Of-Concept Pilot Study, Janine Mathee-Scott, Grace Corrigan, Emily Lorang, Zachary Hesse, Jennifer Johnson, Courtney E. Venker

Speech Pathology and Audiology Faculty Research and Publications

Delayed echolalia, or the repetition of previously heard speech, is often observed in the expressive language of autistic children. Relatively little is known about how the production of delayed echolalia fits within the overall picture of autistic children’s language ability, including receptive language. To date, no empirical studies have tested autistic children’s comprehension of individual words within their delayed echoes. The present study aimed to establish proof-of-concept for a novel method of examining children’s comprehension of individual words that they produce in their own delayed echoes. Using natural language sampling combined with parent report, we identified instances of delayed echolalia …

Too Loud To Ignore: Knowledge, Attitudes, And Practices Regarding Hearing Protection In Student Musicians And Ensemble Directors, Lucile Donald, Ashley G. Flagge

Ashley Flagge Publications

Musicians are at an elevated risk for noise-induced hearing loss (NIHL) due to repeated exposure to sound levels exceeding occupational safety guidelines. Although many strides have been made in educating music students on the potential dangers of noise exposure and the mitigating effects of hearing protection devices, the current attitudes on this topic among high school and college-level student musicians remain largely unknown. An electronic survey was administered to high school (n = 195) and university (n = 161)-level band students and ensemble directors (n = 15) regarding knowledge of noise/music-induced hearing loss (MIHL), personal practices with HPDs, and types …