In all subjects, the regression for verbal memory identified the ADC of orbital frontal segment (B = −24.58; p = 0.004) and posterior parietal segment (B = 10.88; p = 0.02) as predictive variable accounting for 25.5% of the variance (F = 6.00; p = 0.006). The regression for symbol coding test identified the ADC of posterior parietal segment (B = 13.01; p = 0.027) and occipital segment (B = −19.13; p = 0.003) as predictive variable accounting for 26.6% of the variance (F = 6.33; p = 0.005). The regression for the composite score identified the ADC of orbital frontal segment (B = −15.46; p = 0.037), posterior parietal segment (B = 10.47; p = 0.008), and occipital segment (B = −9.10; p = 0.035) as predictive variable accounting for 34.2% of the variance (F = 5.89; p = 0.002). In the SZ group, the ADC of callosal fibers in the occipital segment was significantly associated with the z‐score of verbal memory and the composite score. The regression for verbal memory identified the ADC of occipital segment as predictive
