Published online by Cambridge University Press: 29 January 2018
Bannister (1960, 1962) found that thought-disordered schizophrenics had significantly lower scores on a repertory grid test of the intensity of the relationships between their constructs than did non-thought disordered schizophrenics, normals, neurotics and (in the 1962 study only) depressives. This finding has been confirmed, sometimes in slightly different ways, by a number of subsequent studies (vide infra). On the basis of his results, Bannister put forward the theory that schizophrenic thought disorder is characterized by ‘loosened construing’, which can account for all its clinical signs, and which stems from repeated invalidations of construing. This theory has been followed up in a number of subsequent investigations (Bannister, 1963, 1965; Bannister and Salmon, 1966).
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