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The Effect of Auditory Stimulus Intensity on the Reaction Time of Schizophrenics

Published online by Cambridge University Press:  08 February 2018

P. H. Venables  and
J. Tizard
P. H. Venables
Affiliation:
Medical Research Council Social Psychiatry Research Unit, Institute of Psychiatry, London
J. Tizard
Affiliation:
Medical Research Council Social Psychiatry Research Unit, Institute of Psychiatry, London
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Extract

Two earlier studies (Venables and Tizard, 1956a, b) on the reaction time (RT) of schizophrenics have shown that as the intensity of a visual stimulus is increased beyond an optimum point, RT to the stimulus increases. This “paradoxical” increase in RT is not shown by normal subjects, whose RT decreases as the intensity of visual stimulus increases. It was also found that the paradoxical phenomenon with visual stimuli was only shown on an initial occasion of testing. When the experiment was repeated twenty-four hours later, although there was no alteration in the mean level of RT, the pattern of increase in RT with increasing intensity, previously found, was absent.

Type
Original Articles
Information
Journal of Mental Science , Volume 104 , Issue 437 , October 1958 , pp. 1160 - 1164
Copyright
Copyright © Royal College of Psychiatrists, 1958 

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References

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