This study investigates the state-independence and the state-dependence of theory of mind (ToM) impairments in schiz-ophrenia. In particular, we compared the performance of healthy controls, discharged and hospitalized patients with schizophrenia on three well-known ToM tasks, requiring men-tal state recognition from eyes, inferences about the mental states of others and second-order false belief attribution. All groups of patients performed significantly worse than controls on the three ToM tests. In almost all cases, the results were maintained after controlling for the mediating effect of IQ. ToM scores did not differ significantly between groups. These results support the state independence of ToM impairment in schizophrenia.