Studies confirm the negative syndrome in schizophrenia as a distinct d
imension of psychopathology on both empirical and theoretical grounds.
Current interest in negative symptoms centres on their possible progn
ostic significance; claims are made for a modest but direct effect on
persistent negative symptoms with the newer antipsychotic drugs. Studi
es exploring the cognitive abnormalities underlying particular negativ
e symptoms continue to implicate dysfunction of the prefrontal cortex
and its subcortical connections.