The clinical features of schizophrenia cluster in three categories
(Lewis & Sweet, 2009). Positive or psychotic symptoms include
delusions (false beliefs firmly held in the face of contradictory
evidence), hallucinations (most commonly experienced as hearing
voices distinct from one’s own thoughts), thought disorder (e.g. loose
associations), and abnormal psychomotor activity (e.g. grossly
disorganized behavior, posturing or catatonia). Negative symptoms
include social withdrawal, impairments in initiative and motivation, a
reduced capacity to recognize and express emotional states, and
poverty in the amount or content of speech. Cognitive symptoms
include disturbances in selective attention, working memory, executive
control, episodic memory, language comprehension and socialemotional
processing.
The clinical features of schizophrenia cluster in three categories(Lewis & Sweet, 2009). Positive or psychotic symptoms includedelusions (false beliefs firmly held in the face of contradictoryevidence), hallucinations (most commonly experienced as hearingvoices distinct from one’s own thoughts), thought disorder (e.g. looseassociations), and abnormal psychomotor activity (e.g. grosslydisorganized behavior, posturing or catatonia). Negative symptomsinclude social withdrawal, impairments in initiative and motivation, areduced capacity to recognize and express emotional states, andpoverty in the amount or content of speech. Cognitive symptomsinclude disturbances in selective attention, working memory, executivecontrol, episodic memory, language comprehension and socialemotionalprocessing.
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