Differences in Meta-d′ between schizophrenia patients and controls as a function of spatial frequency (HSF/LSF) and that of response type (yes/no) in Experiment 1. A. Controls showed advantageous metacognitive performance with yes- relative to no-responses only during the HSF target detection task but not during the LSF target detection task, whereas patients showed advantageous performance with yes-responses irrespective of the target spatial frequency. There was a significant spatial frequency × response type × group interaction (F(1, 33) = 4.60, p = .039). The results of post-hoc t-tests are shown. B. Same result from the analyses depicted in A. Differences in meta-d′/d′ between yes- and no-responses are shown for demonstrative purposes. Here, larger values indicate more advantageous metacognitive performance with yes- than no-responses. Error bars indicate standard error of the mean. ** p < .01, * < p < .05.