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Prediction: Clinical vs. Statistical


In psychological assessment, an important step in the process of assessment is the prediction of criteria on the basis of assessment data, the so-called predictors. The processing of assessment data, which yields a prognosis, can follow two different methods of data combination: the statistical method and the clinical method. In the case of the statistical method, the combination of predictors is determined entirely on the basis of known empirical relationships between the predictors and the criteria; that is, on intersubjective knowledge as it arises from well-designed empirical investigations. In the case of the clinical method, no such empirical relationships are available or used; the combination of predictors is done in an ‘intuitive’ way based upon the subjective knowledge of the assessor which arises from his ...

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