[The logic of decision in symptom rating (author's transl)].

The rating systems used in psychiatry consider sometimes different ways of classifying parameters, such as the valuability and the certainty of decision. Those two parameters have been analysed by means of the AMP-ratings of two samples (Berlin: 1879 patients, Zürich: 786 patients). We have found that the reply "not valuable" appears much less frequently than the reply "questionable valuable". For delusional symptoms and disorders of perception the certainty of decision is lowest. The various analyses carried out lead us to the conclusion that without loosing informatory value of any consequence we can renounce any separate documentation on valuability and certainty of decision.