disorganized behavior and negative symptoms

• catatonic behavior - marked decrease in reactivity to the environment
• avolition - a decrease in motivated self-initiated purposeful activities
• alogia - manifested by diminished speech output
• anhedonia - the decreased ability to experience pleasure from positive stimuli or a degradation in the recollection of pleasure previously experienced
• asociality - refers to the apparent lack of interest in social interactions
• negative symptoms - Diminished emotional expression includes reductions in the expression of emotions in the face, eye contact, intonation of speech (prosody), and movements of the hand, head, and face that normally give an emotional emphasis to speech