Which of the following symptoms, though common in schizophrenia, is NOT required for a formal diagnosis of the disorder?

Question

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Although lack of insight (i.e. unawareness that one is experiencing symptoms of a mental health disorder) is common in schizophrenia, it is not required for a formal diagnosis. The three primary criteria for a diagnosis of schizophrenia are: 1) positive symptoms (e.g. delusions, hallucinations); 2) negative symptoms (e.g. affective flattening or lack of emotional expression); and 3) disorganized speech or behavior.

Which of the Following Symptoms, Though Common in Schizophrenia, Is