Fig. 1: Intellectual functioning measures in healthy volunteer (HV) and schizophrenia (SCZ) groups.

a WAIS-IQ was significantly lower in the SCZ compared to the HV group (Cohen’s d = 0.73). b NART-IQ was significantly lower in the SCZ compared to the HV group (Cliff’s delta = 0.37). c NART-WAIS IQ difference score was not significantly different between groups. Greater NART-WAIS-IQ difference score reflects greater reduction from premorbid to current IQ. Error bars indicate standard error of the mean.