On the role of reduced auditory feedback and kinesic self-stimulation during Stroop Color-Word performance1


  • 1

    This research was supported in part by Grants MH14383, MH1983, and MH5090 awarded by the National Institute of Mental Health, United States Public Health Service. We wish to express our appreciation to Drs. Felix Barroso and Wilma Bucci for their helpful comments about various aspects of this article.

Requests for reprints should be sent to Stanley Grand, Box #88, Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, New York 11203.


Feedback from one's own voice provides important vocal–motor cues for effective cognitive processing. Reduction of such feedback is known to disturb such functioning. Work in our laboratory has shown that kinesic self-stimulation also plays an important role in cognition, and appears to regulate the focusing of attention under conditions of distraction. The present study investigated the effects of both auditory feedback and kinesic self-stimulation in the regulation of cognitive interference during performance of the Stroop Color-Word Task. Twelve subjects were tested on the Stroop task under conditions of normal and occluded hearing. Kinesic self-stimulation and response errors during color-word performance were recorded on video tape. The findings indicated that not only did self-stimulation increase when voice feedback was reduced, but that this increase was associated with a reduction in specific types of color-word performance errors. Individual differences revealed that high kinesic responders made significantly fewer errors in task performance than did low kinesic responders. Results were interpreted as revealing a kinesic feedback mechanism which has adaptive significance in regard to self-editing when auditory feedback is reduced.