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What Have Cognitive Deficits to do with Schizophrenic Symptoms?

  • D. R. Hemsley (a1)


This paper considers possible relationships between cognitive deficits and symptomatology in schizophrenia. It is argued that a combination of defective filtering and slowness in response selection results in a state of information overload in acute schizophrenia. The methods by which normal subjects adapt to experimenter-induced overload may therefore be relevant to aspects of schizophrenic behaviour. The considerable intra- and inter-subject variability in symptomatology of schizophrenic patients may represent differing adaptations to similar cognitive disturbance, such secondary abnormalities being prominent in chronic patients. Sections of the literature on acute-chronic differences are consistent with such a formulation, although one cannot infer intra-individual change from cross-sectional studies; there is a clear need for longitudinal investigations in this area. The preferred method of adaptation will be dependent on the severity of overload, the environment, and personality factors independent of the psychosis. The implications for the modification of schizophrenics' behavioural abnormalities by operant procedures are discussed.



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Adams, F. R. (1967) Stereotypy, social responsiveness, and arousal in a case of catatonia. British Journal of Psychiatry, 113, 1123–8.
Andorfer, J. C., Shimkunas, A. M. & Sciarini, J. W. (1975) Neutralization of affective concepts in schizophrenia. Journal of Abnormal Psychology, 84, 722–5.
Bleuler, E. (1911) Dementia Praecox or the Group of Schizophrenias. English Translation, 1950. New York: International Universities Press.
Bodlakova, V., Hemsley, D. R. & Mumford, S. J. (1974) Psychological variables and flattening of affect. British Journal of Medical Psychology, 47, 227–34.
Broadbent, D. E. (1971) Decision and Stress. London and New York: Academic Press.
Broen, W. E. (1966) Response disorganization and breadth of observation in schizophrenia. Psychological Review, 73, 579–85.
Broen, W. E. (1968) Schizophrenia: Research and Theory. New York and London: Academic Press.
Broen, W. E. & Nakamura, C. Y. (1972) Reduced range of sensory sensitivity in chronic nonparanoid schizophrenics. Journal of Abnormal Psychology, 79, 106–11.
Broen, W. E. & Storms, L. H. (1966) Lawful disorganization: the process underlying a schizophrenic syndrome. Psychological Review, 73, 265–79.
Cameron, N. (1951) Perceptual organization and behaviour pathology. In Perception: An Approach to Personality (eds. Blacke, R. R. and Ramsey, G. V.). New York: Ronald Press.
Chapman, J. (1966) The early symptoms of schizophrenia. British Journal of Psychiatry, 112, 225–51.
Claridge, G. S. (1972) The schizophrenias as nervous types. British Journal of Psychiatry, 121, 117.
Depue, R. A. & Woodburn, L. (1975) Disappearance of paranoid symptoms with chronicity. Journal of Abnormal Psychology, 84, No. 1, 84–6.
De Wolfe, A. S., Youkilis, H. D. & Konieczny, J. A. (1975) Psychophysiological correlates of responsiveness in schizophrenia. Journal of Consulting and Clinical Psychology, 43, 192–7.
Epstein, S. (1967) Toward a unified theory of anxiety. In Progress in Experimental Research, Vol 4 (ed. Maher, B. A.). New York: Academic Press.
Epstein, S. & Coleman, M. (1970) Drive theories of schizophrenia. Psychosomatic Medicine, 32, 113–40.
Feeney, S. (1971) Breadth of cue utilization and ability to attend selectively in schizophrenics and normals. Unpublished Ph.D. thesis, University of California, Los Angeles.
Flavell, J. H., Draguns, J., Feinberg, L. D. & Budin, W. A. (1958) A microgenetic approach to word association. Journal of Abnormal and Social Psychology, 57, 17.
Gathercole, C. E. (1965) A note on some tests of over-inclusive thinking. British Journal of Medical Psychology, 38, 5962.
Gruzelier, J. H. & Venables, P. H. (1974) Two flash threshold, sensitivity, and β in normals and schizophrenics. Quarterly Journal of Experimental Psychology, 26, 594604.
Gruzelier, J. H. & Venables, P. H. (1975a) Relations between two flash discrimination and electrodermal activity, re-examined in schizophrenics and normals. Journal of Psychiatric Research, 12, 7385.
Gruzelier, J. H. & Venables, P. H. (1975b) Evidence of high and low levels of physiological arousal in schizophrenics. Psychophysiology, 12, 6673.
Haley, G. A. (1971) Relations among chronicity, diagnosis, premorbid adjustment, defensiveness, and two measures of perceptual scanning. Perceptual and Motor Skills, 33, 1163–70.
Hawks, D. V. & Marshall, W. L. (1971) A parsimonious theory of over-inclusive thinking and retardation in schizophrenia. British Journal of Medical Psychology, 44, 7583.
Hemsley, D. R. (1975) A two stage model of attention in schizophrenia research. British Journal of Social and Clinical Psychology, 14, 81–9.
Hemsley, D. R. (1976) Attention and information processing in schizophrenia. British Journal of Social and Clinical Psychology, 15, 199209.
Hemsley, D. R. & Zawada, S. L. (1976) ‘Filtering’ and the cognitive deficit in schizophrenia. British Journal of Psychiatry, 128, 456–61.
Jackson, D. N. & Messick, S. (1964) Differential Personality Inventory (Form L). College Park, Pa.: Authors.
King, H. E. (1961) Some explorations in psychomotility. Psychiatric Research Reports, 14, 6286.
King, H. E. (1975) Psychomotor correlates of behaviour disorder. In Experimental Approaches to Psychopathology (eds. Keitzman, M. L., Sutton, S. and Zubin, J.), pp 421–50. New York, San Francisco, London: Academic Press.
Koh, S. D. & Shears, G. (1970) Psychophysical scaling by schizophrenics and normals: line lengths and music preferences. Archives of General Psychiatry, 23, 249–59.
Lipowski, Z. J. (1975) Sensory and information inputs overload: behavioural effects. Comprehensive Psychiatry, 16, 199221.
Lhamon, W. T. & Goldstone, S. (1973) Temporal information processing in schizophrenia. Archives of General Psychiatry, 28, 4451.
McGhie, A. & Chapman, J. (1961) Disorders of attention and perception in early schizophrenia. British Journal of Medical Psychology, 34, 103–16.
Miller, J. G. (1960) Information input overload and psychopathology. American Journal of Psychiatry, 116, 695704.
Payne, R. W. (1962) An object classification test as a measure of over-inclusive thinking in schizophrenic patients. British Journal of Social and Clinical Psychology, 1, 213–21.
Payne, R. W. (1971) Cognitive defects in schizophrenia: over-inclusive thinking. In Cognitive Studies, Vol. III. Deficits in cognition (ed. Hellmuth, J.), pp 5389. New York: Brunner Mazel; London: Butterworths.
Strauss, M. E. (1973) Behavioural differences between acute and chronic schizophrenics: course of psychosis, effects of institutionalization, or sampling biases? Psychological Bulletin, 79, No. 5, 271–9.
Usdansky, G. & Chapman, L. J. (1960) Schizophreniclike responses in normal subjects under time pressure. Journal of Abnormal and Social Psychology, 60, 143–6.
Venables, P. H. (1975) Psychophysiological studies of schizophrenic pathology. In Research in Psychophysiology (eds. Venables, P. H. and Christie, M. J.). London: John Wiley.
Wing, J. K. & Brown, G. W. (1968) Institutionalism and Schizophrenia: A Comparative Study of Three Mental Hospitals, 1960–1968. Cambridge University Press.

What Have Cognitive Deficits to do with Schizophrenic Symptoms?

  • D. R. Hemsley (a1)


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What Have Cognitive Deficits to do with Schizophrenic Symptoms?

  • D. R. Hemsley (a1)
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