ABSTRACT
Many of the symptoms of schizophrenia, particularly those described by Schneider (Schneider, 1957) as first rank, seem to reflect a confusion between changes in sensation caused by actions of the self and changes with external causes. Examples include, hearing thoughts spoken aloud, thought echo, made emotions, somatic passivity experiences, and delusions of control. In all these cases the patient is attributing effects generated by the self to external forces.
