Table 1.
Mean scores and standard deviations per group and measure
| CTL (n = 46) | OCD (n = 27) | Statistic | |
|---|---|---|---|
| GENDER(F:M) | 28/18 | 18/9 | χ2(1) = 0.25, p = .62 |
| AGE | 16.59 (1.78) | 16.16 (1.67) | Z = 1.81, p = .07 |
| WASI‐II (IQ)a | 107.61 (11.62) | 107.12 (13.02) | t(70) = 0.17, p = .87 |
| BDI** | 46.46 (5.27) | 59.03 (9.55) | t(35.45) = −6.31, p < .001 |
| BAI** | 45.98 (7.66) | 65.48 (9.37) | Z = −6.88, p < .001 |
| OCI** | 8.13 (6.49) | 31.70 (13.92) | Z = −6.35, p < .001 |
| CY‐BOCS a | N/A | 23.62 (4.84) | N/A |
| CY‐BOCS Obsessions a | N/A | 11.23 (2.18) | N/A |
| CY‐BOCS Compulsions a | N/A | 12.35 (2.99) | N/A |
| Overall LR | 0.61 (0.25) | 0.90 (0.55) | Z = −2.18; p = .029 |
| LR (Small PE) | 0.53 (0.46) | 1.45 (1.62) | Z = −2.78; p = .0055 |
| LR (Medium PE) | 0.53 (0.30) | 0.64 (0.40) | Z = −0.95, p = .34 |
| LR (Large PE) | 0.80 (0.11) | 0.82 (0.13) | Z = −0.29, p = .77 |
| Confidence Ratings (Overall) | 4.50e−17 (2.58e−16) | −6.07e−18 (1.85e−16) | t(71) = 0.90, p = .37 |
| Action–Confidence Association Strength | 0.053 (0.064) | 0.044 (0.079) | t(71) = 0.54, p = .59 |
Details of questionnaires in Supporting Information. Mean (SD) reported. Key: CTL, Control Group; OCD, Obsessive–Compulsive Disorder group; WASI‐II, Wechsler’s Abbreviated Scale of Intelligence – II; IQ, Intelligence Quotient; BDI, Beck’s Depression Inventory(t‐scored); BAI, Beck’s Anxiety Inventory (t‐scored); OCI, Obsessive–Compulsive Inventory; CY‐BOCS, Child Yale‐Brown Obsessive–Compulsive Scale; LR, Learning Rates; PE, Prediction Error; N/A, Not applicable. *p < .05; **p < .01; amissing data from one OCD participant.