Figure 2.

Behavioral and trait measurements. (A) ASD group showed impaired empathetic pain discriminability d′. (B) There was no significant group difference in decision bias β. (C) ASD group showed greater trait alexithymia, that is, greater difficulty in emotional awareness, measured by the 20‐item Toronto Alexithymia Scale (TAS‐20). (D) The ASD group also showed impaired trait empathy, measured by the empathy quotient. ASD, autism spectrum disorder; HC, healthy control. **P < 0.01, ***P < 0.001, n.s., not significant. Error bars indicate standard errors of the mean.