negative schizophrenia
a form of schizophrenia characterized by a predominance of negative symptoms, suggesting deficiency or absence of behavior normally present in a person’s repertoire, as shown in apathy, blunted affect, emotional withdrawal, poor rapport, and lack of spontaneity. Compare positive schizophrenia. [defined in 1982 by U.S. psychiatrists Nancy C. Andreasen and Scott A. Olsen]