Which of the following is considered a negative symptom of schizophrenia?

Alogia is considered a negative symptom of schizophrenia because it involves a reduction in the amount of speech and is characterized by a decreased ability to engage in conversation. This symptom reflects a lack of motivation to speak and a diminished fluency and productivity of thought and speech. Negative symptoms, as classified in the DSM-5, refer to deficits in normal emotional responses or behaviors, impacting a person's ability to function in everyday life.

In contrast, hallucinations and delusions are classified as positive symptoms of schizophrenia. Positive symptoms are characterized by the presence of abnormal experiences, such as hearing voices (hallucinations) or holding false beliefs that are strongly held despite contrary evidence (delusions). Mania is typically associated with mood disorders, particularly bipolar disorder, and does not characterize the symptomatology of schizophrenia. Understanding the distinction between negative and positive symptoms is crucial to diagnosing and treating schizophrenia effectively.