Adults Who Stutter: Responses to Cognitive Stress

The purpose of this study was to investigate the effects of speed and cognitive stress on the articulatory coordination abilities of adults who stutter. Cardiovascular (heart rate, systolic blood pressure, and diastolic blood pressure), behavioral (dysfluencies, errors, speech rate, and response lat...

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Bibliographic Details
Published in:Journal of speech and hearing research 1994-08, Vol.37 (4), p.746-754
Main Authors: Caruso, Anthony J, Chodzko-Zajko, Wojtek J, Bidinger, Debra A, Sommers, Ronald K
Format: Article
Language:English
Subjects:
Adolescent
Adult
Adult and adolescent clinical studies
Biological and medical sciences
Blood Pressure
Cognition
Cognition & reasoning
Cognitive aspects
Female
Heart Rate
Humans
Language and communication disorders
Male
Medical sciences
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Reproducibility of Results
Speech Acoustics
Speech disorders
Stress
Stress, Psychological - psychology
Stuttering
Stuttering - psychology
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Summary:The purpose of this study was to investigate the effects of speed and cognitive stress on the articulatory coordination abilities of adults who stutter. Cardiovascular (heart rate, systolic blood pressure, and diastolic blood pressure), behavioral (dysfluencies, errors, speech rate, and response latency), and acoustic (word duration, vowel duration, consonant-vowel transition duration/extent, and formant center frequency) measures for nine stutterers and nine nonstutterers were collected during performance of the Stroop Color Word task, a well-established and highly stressful cognitive task. Significant differences were found between the two groups for heart rate, word duration, vowel duration, speech rate, and response latency. In addition, stutterers produced more dysfluencies under speed plus cognitive stress versus speed stress or a self-paced reading task. These findings demonstrate that the presence of cognitive stress resulted in greater temporal disruptions and more dysfluencies for stutterers than for nonstutterers. However, similar spatial impairments were not evident. The potential contributions of the Stroop paradigm to stuttering research as well as the need for further research on autonomic correlates of stuttering are also discussed.
ISSN:0022-4685
1092-4388
1558-9102
DOI:10.1044/jshr.3704.746