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[Possibilities for psychological intervention in persistent delusions and persistent acoustic hallucinations in schizophrenic patients].

In practice the therapy of treatment resistant psychotic symptomatology (delusions and hallucinations) is a difficult and up to now unsolved problem. This overview presents and discusses behaviour therapy oriented studies (in the main part single case studies). The majority of studies show that it is in principle possible to influence this symptomatology. Because of methodological limitations of many studies finally some proposals for future research are discussed.