Which of the following is NOT one of the major symptoms of schizophrenia?

Split personality

The correct answer is Option (1) → Split personality

Split personality (also known as Dissociative Identity Disorder) is not a symptom of schizophrenia. It is a separate disorder altogether. Schizophrenia is primarily characterized by delusions (false beliefs), hallucinations (false perceptions), alogia (poverty of speech), blunted affect, social withdrawal, and disorganized thinking or behaviour.