Fig. 2: Associations between 1st- and 2nd-order decision parameters and self-reported psychopathology, additionally controlling for the influence of age and gender, in experiment 1.

a Associations between psychiatric symptom questionnaire scores and Meta-dā parameters from separate regression models. Given that all variables were z-scored prior to entry into the regression models, the y-axis indicates the change in each decision parameter (in standard deviations) for each change of 1 standard deviation of questionnaire scores. Accuracyā=ād', Metacognitive sensitivityā=āmeta-d', Metacognitive efficiencyā=ālog(meta-d'/d'). b In line with previous studies26,47, factor analysis on the correlation matrix of all 209 questionnaire items revealed a three-factor solution comprising anxious-depression (AD), compulsive behaviour and intrusive thought (CIT) and social withdrawal (SW). The relationships between these transdiagnostic symptom dimension scores and Meta-dā parameters were investigated using multiple regression models. CIT showed negative relationships with both 1st-order accuracy and confidence criteria, whereas AD showed a positive relationship with confidence criteria. All error bars denote 95% Confidence Intervals for the regression coefficients. °Pā<ā0.05 uncorrected; **Pā<ā0.05 Bonferroni corrected for multiple comparisons over the number of dependent variables tested.