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Manual reaction times and error rates in stutterers
1Nijmegen Institute for Cognition Research and Information Technology, The Netherlands.
Perceptual and Motor Skills
|April 1, 1991
Summary
This study found no significant differences in manual reaction speed or speed-accuracy trade-offs between stutterers and non-stutterers. Both groups performed similarly on a button-pressing task, indicating no distinct motor control variations.
Area of Science:
- Speech and Language Pathology
- Motor Control Research
Background:
- Stuttering is a complex speech disorder.
- Previous research has explored various aspects of motor control in individuals who stutter.
Purpose of the Study:
- To investigate if stutterers exhibit differences in manual reaction speed and speed-accuracy trade-offs compared to non-stutterers.
- To assess motor response characteristics in individuals with and without stuttering.
Main Methods:
- 18 stutterers and 18 non-stutterers participated in a reaction time task.
- Participants were instructed to press a button as quickly as possible on specific trials.
- The task included trials requiring no response to assess error rates.
Main Results:
- Stutterers showed marginally faster reaction times but also a trend towards increased errors.
- These differences in reaction time and error rates were not statistically significant.
- No significant difference was found in the speed-accuracy trade-off criterion between the two groups.
Conclusions:
- Stutterers do not significantly differ from non-stutterers in manual reaction speed.
- Individuals who stutter do not employ a different speed-accuracy trade-off strategy for this type of task.
- Findings suggest comparable basic motor response capabilities between stutterers and non-stutterers.