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

Social isolation is considered a negative symptom of schizophrenia because it reflects a decrease in functioning and the absence of normal emotional responses or behaviors. Negative symptoms arise from the reduction or loss of normal functions, making it difficult for individuals to engage socially and maintain relationships.

In the context of schizophrenia, negative symptoms encompass aspects such as diminished emotional expression, lack of motivation, an absence of social interaction, and withdrawal from social activities. Social isolation specifically indicates an individual’s tendency to withdraw from others, which can severely impact their quality of life and ability to function in a community.

On the other hand, delusions and thought disorders are classified as positive symptoms, as they represent an excess or distortion of normal functioning — such as false beliefs or disorganized thinking. Inappropriate affect, likewise, refers to an emotional response that doesn’t align with the situation, which also does not fall into the category of negative symptoms. Thus, social isolation stands out as a hallmark of the negative side of schizophrenia, representing the absence of social engagement and emotional connection.