Speech and Hearing Science Commons^™

Effectiveness Of Proloquo2goTm In Enhancing Communication In Children With Autism During Aba Therapy, Taylor Eastin Krcek

Doctoral Dissertations

Autism is a bio-neurological developmental disorder presenting in early childhood that has a profound effect on an individual's ability to communicate. The iPad® with the Proloquo2Go^TM app is a multilingual Augmentative and Alternative Communication (AAC) solution designed to assist people who have difficulty speaking or cannot speak at all. This study examines the effectiveness of the Proloquo2Go^TM app delivered via iPad® to enhance the tacting, manding, and verbal completion repertoires of children with autism. Participants included five children between the ages of three and four years old diagnosed with an autism spectrum disorder (ASD) and with low to …

Vowel Perception In Normal And Hearing Impaired Listeners, Lauren Charles

Chancellor’s Honors Program Projects

No abstract provided.

Components Of Auditory Closure, Steven Glen Madix

Doctoral Dissertations

Auditory closure (AC) is an aspect of auditory processing that is crucial for understanding speech in background noise. It is a set of abilities that allows listeners to understand speech in the absence of important information, both spectral and temporal. AC is evaluated using monaural low-redundancy speech tasks: low-pass filtered words (LPFW), time-compressed words (TCW), and words-in-noise (WiN). Although not previously used, phonemic restoration with words (PhRW) is also a speech task that has been proposed as a measure of AC. In the present study, four tasks of AC, that are listed above, were used to evaluate AC skills in …

Changes In The Perception Of Stop Consonants Through Enhanced Cue Training As Reflected By Categorical Boundaries And Late Auditory Evoked Potentials, Clifford Anthony Franklin

Doctoral Dissertations

Hearing-impaired listeners have difficulty in discriminating between voiced stop consonants. An important acoustic cue in this discrimination is the transition from the frequency of the consonant to the frequency of the vowel. The main purpose of this study was to investigate the effect of auditory training on the perception of the formant transition cue in the discrimination of the place of articulation of voiced stop consonants in synthetic CV stimuli of hearing-impaired listeners. Changes in perception were represented by behavioral and electrophysiological measures. Generalization effects after training and correlations between behavioral and electrophysiological measures were also measured.

Eight male and …

An Examination Of Selected Vowel Structures Of Three Generations Of Native Appalachian English Speakers, Melinda L. Richards

Doctoral Dissertations

Appalachian English (AppE) is a relic dialect, until recently considered to be resistant to change due to the relative isolation of its speakers. AppE may have become an “endangered dialect,” much in the same manner as other insular dialects such as those spoken on Ocracoke Island, Smith Island, and the Sea Islands (Wolfram & Schilling-Estes, 1995; Wolfram & Schilling-Estes, 1998). The purpose of this investigation was to answer two research questions: (1) Are there significant cross-generational differences in the production of eight selected vowels during conversational speech, and (2) Are there significant cross-generational differences in the degree to which speakers …

The Effects Of Syllable Releasing And Arresting Positions On The Correct Articulation Of Five Selected Phonemes, Elizabeth Owens Kaplon

Doctoral Dissertations

The purposes of this study were (1) To investigate the effects of syllable releasing and arresting positions on correct /s/, /z/, /ʃ/, /tʃ/ and /d₃/ productions by articulatory defective children; and (2) to investigate the effects of varying phonetic contexts on correct productions of the five phonemes in syllable releasing and arresting positions by articulatory defective children.

Forty children with defective articulation were selected as subjects in this study and met the following criteria: normal hearing, normal intelligence, no significant deviations in the structure and/or function of the oral mechanism, and defective articulation. The speech stimuli used in …

Speed And Variability Of Voice Reaction Times Of Stuttering And Nonstuttering Children And Adults, Douglas Edward Cross

Doctoral Dissertations

The mean and intrasubject response variability of voice reaction time to auditory stimuli was investigated for five year old, nine year old and adult stutterers and nonstutterers. The subjects who participated in this study were twenty-seven stutterers and twenty-seven nonstutterers at each of the three age levels. All of the stutterers had been reported to have exhibited the onset of stuttering behavior by no later than five years of age.

Each of the subjects was presented with a total of fifty-five prerecorded 1000 Hz tones bilaterally through stereo earphones at 80dB SPL. The stimuli were divided into five equal sets …