Identifying Negative Symptoms of Schizophrenia

In the study of schizophrenia spectrum disorders, researchers have identified various subtypes and symptom categories. One of the classifications involves the distinction between negative and positive symptoms. Positive symptoms include excesses or distortions of normal functions, while negative symptoms reflect a decrease or absence of normal functions.

Among the following, which symptom is classified as a negative symptom of schizophrenia, according to the DSM-5 criteria?