The state-trait disjunction of anhedonia in schizophrenia: Potential affective, cognitive and social-based mechanisms

► Patients with schizophrenia show a paradoxical disjunction in state and trait emotional experiences. ► These emotional symptoms are critical to understanding schizophrenia because they are associated with poor prognosis and are largely intractable. ► We propose five hypotheses to explain this paradox supported by the schizophrenia and the larger psychological and neuroscience literatures.