(idea) by Trelane Tue Nov 21 2000 at 16:41:34
negative symptom n. <neg-a-tiv simp-tum> {psychology}

A negative symptom in schizophrenia is a lack of what would be considered "normal" behaviour. Lack of emotion, meaning in their words, and so on. Contrast this with a positive symptom, which is the presence of "abnormal" behaviour.

Examples:
Flat affect, poverty of speech.
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