In all subjects, the regression for symbol coding test identified the AD of temporal segment (B = 10.08; p = 0.015) and occipital segment (B = −13.01; p = 0.007) as predictive variable accounting for 25.3% of the variance (F = 5.92; p = 0.006). The regression for the Tower of London identified the AD of anterior frontal segment (B = −12.44; p = 0.020) and temporal segment (B = 11.55; p = 0.003) as predictive variable accounting for 25.7% of the variance (F = 6.04; p = 0.006). In the SZ group, the AD of callosal fibers in the orbital frontal and occipital segment was significantly associated with the z‐score of symbol coding test. The regression for symbol coding test identified the AD of orbital frontal segment (B = 28.84; p = 0.024) and occipital segment (B = −20.66; p = 0.001) as predictive variable accounting for 50.5% of the variance (F = 8.16; p = 0.004).
