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Examining Bilingual Language Control Using the Stroop Task

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Inhibitory control in childhood stuttering.

Kurt Eggers¹, Luc F De Nil, Bea R H Van den Bergh

¹Dept. of Speech-Language Therapy and Audiology, Lessius University College, Belgium. Kurt.eggers@lessius.eu

Journal of Fluency Disorders

|April 2, 2013

Summary

Children who stutter (CWS) demonstrated lower inhibitory control (IC) compared to children who do not stutter (CWNS). This was evidenced by more errors and slower adaptation on a computer task, supporting existing theories of stuttering development.

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Area of Science:

Neuroscience
Developmental Psychology
Speech-Language Pathology

Background:

Parental reports suggest differences in inhibitory control (IC) between children who stutter (CWS) and children who do not stutter (CWNS).
Direct measurement of IC is needed to validate these questionnaire-based findings.
Understanding IC in CWS is crucial for developing effective interventions.

Purpose of the Study:

To investigate if direct computer-based measurements of inhibitory control (IC) align with previous questionnaire-based findings in children who stutter (CWS).
To compare IC performance between CWS and children who do not stutter (CWNS) using a standardized neuropsychological task.

Main Methods:

The study included 30 children who stutter (CWS) and 30 children who do not stutter (CWNS), matched for age and gender.
Inhibitory control (IC) was assessed using the Go/NoGo task from the Amsterdam Neuropsychological Tasks.
Performance metrics included reaction times, false alarms, and response adaptation after errors.

Main Results:

Children who stutter (CWS) exhibited significantly more false alarms and premature responses compared to children who do not stutter (CWNS).
CWS showed reduced reaction times for false alarms and a diminished ability to adjust their response strategies following errors.
These findings indicate a lower capacity for inhibitory control in CWS.

Conclusions:

The results confirm that children who stutter (CWS) have measurable deficits in inhibitory control (IC) compared to their non-stuttering peers.
This supports the hypothesis of underlying differences in self-regulatory processes contributing to stuttering.
The findings have implications for theoretical models of stuttering development and potential clinical interventions.