ECT soon became more popular than cardiazol convulsion therapy in mental hospitals in the UK . It was quickly identified as being especially useful in the treatment of affective psychosis.
2.
In 1959, psychiatrist Kurt Schneider ( 18871967 ) began to further refine conceptualizations of the different forms that schizoaffective disorders can take since he observed " concurrent and sequential types " . ( The " concurrent type " of illness he referred to is a longitudinal course of illness with episodes of mood disorder and psychosis occurring predominantly at the same time [ now called psychotic mood disorders or affective psychosis ]; while his " sequential type " refers to a longitudinal course predominantly marked by alternating mood and psychotic episodes . ) Schneider described schizoaffective disorders as " cases in-between " the traditional Kraepelinian dichotomy of schizophrenia and mood disorders.