<p>Data reflect mean (SD) unless otherwise stated. “–” reflect not applicable; “*” means significant statistical difference (statistical threshold <i>p</i><0.05). WAIS-I = Information subscale of the Wechsler Adult Intelligence Scale-Chinese Revised; WAIS-DS = Digit Symbol subscale of the Wechsler Adult Intelligence Scale-Chinese Revised; SAPS = Scale for the Assessment of Positive Symptoms; SANS = Scale for the Assessment of Negative Symptoms; SSRS = Schizophrenia Suicide Risk Scale; CPZ = Chlorpromazine. The proportion correct responses and response time(s) for correct responses were the performance during 2-back task.</p
