Speech and Hearing Science Commons^™

Acoustic Changes During Passage Reading In Speakers With Parkinson's Disease, Kimberly C. Grubbs

LSU Master's Theses

Purpose: The purpose of this study was to evaluate speech changes in Parkinson’s disease (PD) while reading a passage, using both local (i.e., segment level) and global (i.e., utterance level) acoustic measures.

Methods: 20 speakers participated in the study (10 PD, 10 neurologically healthy controls). The speakers were asked to read The Caterpillar passage in a conversational mode. A total of five acoustic measures were included (local: vowel duration, Euclidean distance between corner vowels and schwa; global: articulation rate, F0/intensity range). These acoustic measures were compared between two sentences located in the two positions within the paragraph, initial and final. …

The Relationship Between Working Memory, Procedural Learning, And Declarative Memory In Children With Specific Language Impairment, Allison Grace Herring

LSU Master's Theses

Background: Children with specific language impairment (SLI) have recently been suggested to have subclinical deficits in executive function skills. The current study seeks to better understand these deficits by exploring the role of nonverbal working memory in word learning and statistical learning in this population. Method: Participants included typically developing children along with children with SLI ranging from ages 8-12 years old. Word learning was assessed using a fast-mapping task, statistical learning was measured using a word-segmentation task, and nonverbal working memory was measured using an N-back task. Results: A significant difference was found between children’s segmentation accuracy scores. …

Acoustic Characteristics Of Word-Final American English Liquids Produced By L2 Adult Speakers, Judith A. Espinal

LSU Master's Theses

In this study, the acoustic differences between native English speakers’ (L1) and native-Korean speakers’ (L2) production of American English liquids /ɹ/, /l/ and /ɹl/ were examined among 14 Korean speakers and 13 English speakers. Temporal measures included (1) relative timing of maximum constriction and (2) duration of vocalic nuclei. Spectral measures included (1) Euclidean distance between /ɹ/ and /l/ and (2) frequency difference between F2 and F3. The results indicated a significant interaction between speaker group and phonetic stimuli. That is, L2 speakers produced a similar degree of constriction across semivowels, whereas L1 speakers produced varying degrees of F2-F3 constrictions …

Research To Practice- Implementing Sign-Infused Intervention As A Novice Clinician, Loren Stoller

LSU Master's Theses

Speech-Language Pathologists often infuse manual signs into oral language interventions for children with various communication disorders. The current study was designed to learn more about sign-infused language intervention by examining one novice clinician’s use of signs during oral language intervention with a child diagnosed as a late talker. The researcher was the clinician, and while a novice interventionist, she was proficient in American Sign Language (ASL) and had five years of experience using ASL with others. The child was 26 months of age at the start of the study, and data collection included three pre-intervention sessions, 12 intervention sessions, and …