To confirm that there were no group differences in RTs or error rates in responding to the different outcome image types (faces, houses) we examined these responses in two separate repeated-measures ANOVAs with group (ASD, n=24; NT, n=25) as a between participants factor in each case. For reaction times there was a significant main effect of stimulus type, reflecting the fact that participants were in general slower to respond to house images over face images (F(1,47)=16.52, P<0.001). Additionally there was a main effect of group indicating that the ASD participants were generally slower to respond than the NT participants (F(1,47)=5.54, P=0.023) but crucially there was no interaction between stimulus type and group (F(1,47)=1.23, P=0.2). For error rates, participants generally made more errors on house trials (main effect of stimulus type: F(1,47)=13.37, P=0.001), but there was no group difference in errors overall (non-significant main effect of group: F(1,47)=0.8, P=0.37) and there was no stimulus type x group interaction (F(1,47)=0.02, P=0.9). ASD, autism spectrum disorder. NT, neurotypical. Data points represent individual participants, red lines indicate the mean, shaded regions and error bars show 95% confidence intervals and 1 standard deviation of the mean.