A Danish centre contributed 12 cases to a Nordic multicentre investigation concerning the psychotherapy of psychoses. Patients admitted consecutively to the psychiatric hospital with the diagnoses of schizophrenia, schizophreniform psychosis or schizoaffective psychosis were offered psychotherapy at least once weekly for two years in addition to the other treatment modalities administered. In the Danish design, the process of supervision in relation to the processes of psychotherapy was investigated. In the present article, examples are presented illustrating how core psychotic mechanisms in the patients are reflected not only in process-facilitating but also in process inhibiting psychotherapeutic interventions. The data of the investigation are these interventions which are written down prospectively in the summaries of the supervision.