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Search Results for all work with filters:

  • Speech Communication

Work 1-5 of 5

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Article

Expressive language sampling as a source of outcome measures for treatment studies in fragile X syndrome: feasibility, practice effects, test-retest reliability, and construct validity

by Leonard Abbeduto; Elizabeth Berry-Kravis; Audra Sterling; Stephanie Sherman; Jamie O. Edgin; Andrea McDuffie; Anne Hoffmann; Debra Hamilton; Michael Nelson; Jeannie Aschkenasy; Angela John Thurman

2020

Subjects
  • Health Sciences, Speech Pathology
  • Psychology, Behavioral
  • Speech Communication
  • Biology, Neuroscience
  • Chemistry, Biochemistry
  • File Download
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Abstract:Close

Background: The evaluation of treatment efficacy for individuals with fragile X syndrome (FXS) or intellectual disability (ID) more generally has been hampered by the lack of adequate outcome measures. We evaluated expressive language sampling (ELS) as a procedure for generating outcome measures for treatment research in FXS. We addressed: (a) feasibility, (b) practice effects over two administrations, (c) test-retest reliability over the repeated administrations, and (d) construct validity. We addressed these issues for the full sample as well as for subgroups defined by age, IQ, and ASD status. Methods: Participants were 106 individuals with FXS between ages 6 and 23 years who had IQs within the range of intellectual disability (IQ < 70). ELS procedures for collecting samples in conversation and narration were followed and analyzed separately. Five measures were derived from transcripts segmented into C-units (i.e., an independent clause and its modifiers): number of C-units per minute (talkativeness), number of different word roots (vocabulary), C-unit length in morphemes (syntax), percentage of C-units containing dysfluency (utterance planning), and percentage of C-units that were fully or partly unintelligible (articulatory quality). ELS procedures were administered twice at 4-week intervals for each participant. Standardized tests and informant reports were administered and provided measures for evaluating construct validity of ELS measures. Results: We found low rates of noncompliance, suggesting the task can be completed meaningfully by most individuals with FXS, although noncompliance was higher for younger, lower IQ, and more autistic participants. Minimal practice effects and strong test-retest reliability over the 4-week interval were observed for the full sample and across the range of ages, IQs, and autism symptom severity. Evidence of convergent construct validity was observed for the measures of vocabulary, syntax, and unintelligibility for the full sample and across the range of IQ and autism symptom severity, but not for participants under age 12. Conversation and narration yielded largely similar results in all analyses. Conclusions: The findings suggest that the ELS procedures are feasible and yield measures with adequate psychometric properties for a majority of 6 to 23 years with FXS who have ID. The procedures work equally well regardless of level of ID or degree of ASD severity. The procedures, however, are more challenging and have somewhat less adequate psychometric properties for individuals with FXS under age 12.

Article

Specificity and generalization in perceptual adaptation to accented speech

by Jessica E. D. Alexander; Lynne Nygaard

2019

Subjects
  • Language, Linguistics
  • Psychology, Cognitive
  • Speech Communication
  • Health Sciences, Speech Pathology
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Abstract:Close

The present study investigated the degree to which perceptual adaptation to foreign-accented speech is specific to the regularities in pronunciation associated with a particular accent. Across experiments, the conditions under which generalization of learning did or did not occur were evaluated. In Experiment 1, listeners trained on word-length utterances in Korean-accented English and tested with words produced by the same or different set of Korean-accented speakers. Listeners performed better than untrained controls when tested with novel words from the same or different speakers. In Experiment 2, listeners were trained with Spanish-, Korean-, or mixed-accented speech and transcribed novel words produced by unfamiliar Korean- or Spanish-accented speakers at test. The findings revealed relative specificity of learning. Listeners trained and tested on the same variety of accented speech showed better transcription at test than those trained with a different accent or untrained controls. Performance after mixed-accent training was intermediate. Patterns of errors and analysis of acoustic properties for accented vowels suggested perceptual improvement for regularities arising from each accent, with learning dependent on the relative similarity of linguistic form within and across accents. © 2019 Acoustical Society of America.

Article

Understanding How Grammatical Aspect Influences Legal Judgment

by Andrew Sherrill; Anita Eerland; Rolf A. Zwaan; Joseph P. Magliano

2015

Subjects
  • Literature, General
  • Speech Communication
  • Psychology, Behavioral
  • File Download
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Abstract:Close

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Recent evidence suggests that grammatical aspect can bias how individuals perceive criminal intentionality during discourse comprehension. Given that criminal intentionality is a common criterion for legal definitions (e.g., first-degree murder), the present study explored whether grammatical aspect may also impact legal judgments. In a series of four experiments participants were provided with a legal definition and a description of a crime in which the grammatical aspect of provocation and murder events were manipulated. Participants were asked to make a decision (first- vs. second-degree murder) and then indicate factors that impacted their decision. Findings suggest that legal judgments can be affected by grammatical aspect but the most robust effects were limited to temporal dynamics (i.e., imperfective aspect results in more murder actions than perfective aspect), which may in turn influence other representational systems (i.e., number of murder actions positively predicts perceived intentionality). In addition, findings demonstrate that the influence of grammatical aspect on situation model construction and evaluation is dependent upon the larger linguistic and semantic context. Together, the results suggest grammatical aspect has indirect influences on legal judgments to the extent that variability in aspect changes the features of the situation model that align with criteria for making legal judgments.

Article

Conscious and unconscious processing of nonverbal predictability in Wernicke's area

by Amanda Bischoff-Grethe; Shawnette M. Proper; Hui Mao; Karen A. Daniels; Gregory Berns

2000

Subjects
  • Biology, Neuroscience
  • Speech Communication
  • Psychology, Behavioral
  • Engineering, Biomedical
  • File Download
  • View Abstract

Abstract:Close

The association of nonverbal predictability and brain activation was examined using functional magnetic resonance imaging in humans. Participants regarded four squares displayed horizontally across a screen and counted the incidence of a particular color. A repeating spatial sequence with varying levels of predictability was embedded within a random color presentation. Both Wernicke's area and its right homolog displayed a negative correlation with temporal predictability, and this effect was independent of individuals' conscious awareness of the sequence. When individuals were made aware of the underlying sequential predictability, a widespread network of cortical regions displayed activity that correlated with the predictability. Conscious processing of predictability resulted in a positive correlation to activity in right prefrontal cortex but a negative correlation in posterior parietal cortex. These results suggest that conscious processing of predictability invokes a large-scale cortical network, but independently of awareness, Wernicke's area processes predictive events in time and may not be exclusively associated with language.

Article

Consequences and Solutions for the Impact of Communication Impairment on Noninvasive Ventilation Therapy for Acute Respiratory Failure: A Focused Review.

by An-Kwok Ian Wong; Patrica C. Cheung; Mary Beth Happ; Peter C. Gay; Nancy Collop

2020

Subjects
  • Speech Communication
  • Health Sciences, Health Care Management
  • Health Sciences, Medicine and Surgery
  • File Download
  • View Abstract

Abstract:Close

Objectives: With over 2 million cases of acute respiratory failure in the United States per year, noninvasive ventilation has become a leading treatment modality, often supplanting invasive mechanical ventilation as the initial treatment of choice. Most acute respiratory failure patients use a full face (oronasal) mask with noninvasive ventilation, which is known to impair communication, but its popularity and benefit has led many providers to accept the communication impairment. Medical staff periodically remove masks to communicate with patients, but patients are often limited to short utterances and risk lung derecruitment upon removal of positive pressure. These problems can lead to noninvasive ventilation failure, which is often linked to worse outcomes than first initiating invasive mechanical ventilation and can lead to increased hospitalization costs. Data Sources: We searched MEDLINE and Google Scholar for "speech," "communication," "impairment," "failure," "complications," "NIPPV," "NIV," and "noninvasive ventilation." Study Selection: We included articles with patients in acute respiratory failure. We excluded articles for patients using noninvasive ventilation therapy for obstructive sleep apnea. Data Synthesis: Communication impairment has been associated with increasing noninvasive ventilation anxiety (odds ratio, 1.25). Of patients using noninvasive ventilation, 48% require early discontinuation, 22% refuse noninvasive ventilation, and 9% are ultimately intubated. Improvements to communication have been shown to reduce fear and anxiety in invasive mechanical ventilation patients. Analogous communication problems exist with effective solutions in other fields, such as fighter pilot masks, that can be easily implemented to enhance noninvasive ventilation patient care, increase adherence to noninvasive ventilation treatment, and improve patient outcomes. Conclusions: Communication impairment is an underappreciated cause of noninvasive ventilation complications and failure and requires further characterization. Analogous solutions-such as throat microphones and mask-based microphones-that can be easily implemented show potential as cost-effective methods to reduce noninvasive ventilation failure.
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