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A theory of the physiological processes underlying schizophrenic thinking disturbance is outlined and a system of analysing responses to the Object Sorting Test is developed. A comparison is made between Sorting Test performance and an independent clinical assessment of thinking disturbance in 32 schizophrenic patients.The clinical usefulness of the Object Sorting Test is discussed and experimental tests of hypotheses deriving from the proposed theory of schizophrenic thinking disturbance are suggested.
S. H. Lovibond (Tue,) studied this question.