Table I.
Self‐report measures and behavioral performance in the Eriksen Task for low (N = 17) and high (N = 17) BDI subjects
| Low BDI* | High BDI* | t | P | |
|---|---|---|---|---|
| Self‐report measures | ||||
| BDI | 1.53 ± 1.23 | 19.94 ± 6.75 | 11.06 | 0.001 |
| PANAS‐trait | ||||
| PA | 34.47 ± 4.99 | 26.06 ± 4.96 | −4.93 | 0.001 |
| NA | 16.24 ± 2.33 | 24.94 ± 6.53 | 5.17 | 0.001 |
| PANAS‐statea | ||||
| PA | 28.03 ± 5.25 | 23.21 ± 5.25 | −2.68 | 0.015 |
| NA | 13.91 ± 0.92 | 16.09 ± 2.53 | 3.33 | 0.005 |
| STAI statea | 28.82 ± 4.76 | 36.96 ± 7.74 | 3.69 | 0.001 |
| MASQ | ||||
| GDA | 14.24 ± 3.25 | 24.18 ± 8.71 | 4.41 | 0.001 |
| AA | 19.35 ± 3.46 | 31.88 ± 11.91 | 4.17 | 0.001 |
| GDD | 17.12 ± 4.00 | 34.82 ± 8.29 | 7.93 | 0.001 |
| AD | 43.82 ± 5.84 | 75.00 ± 11.76 | 9.79 | 0.001 |
| Eriksen task | ||||
| Overall performanceb | ||||
| RT (ms) | 508.32 ± 52.88 | 502.68 ± 59.65 | −0.29 | 0.77 |
| Accuracy | 0.84 ± 0.046 | 0.85 ± 0.039 | 0.48 | 0.64 |
| Compatibility (Eriksen) effectc | ||||
| RT (ms) | 6.06 ± 20.04 | 9.41 ± 24.49 | 0.44 | 0.66 |
| Accuracy | −0.12 ± 0.11 | −0.09 ± 0.11 | 1.04 | 0.31 |
| Post‐error (Laming) adjustmentd | ||||
| RT (ms) | 20.76 ± 19.10 | 26.59 ± 17.56 | 0.93 | 0.36 |
| Accuracy | 0.01 ± 0.052 | −0.02 ± 0.030 | −2.05 | 0.048 |
| Conflict‐adaptation (Gratton) effecte | ||||
| RT (ms) | 0.59 ± 8.02 | 2.62 ± 16.00 | 0.47 | 0.64 |
| Accuracy | −0.00 ± 0.03 | 0.01 ± 0.05 | 1.09 | 0.28 |
Values are expressed as mean ± SD.
For the state PANAS and STAI scales, values are averaged between the pre‐ and post‐task assessment because no significant effects involving Time (pre‐ vs. post‐task) emerged.
Mean RT and accuracy (averaged across trial types).
Compatibility effect: [RTIncompatible trials − RTCompatible trials]; [AccuracyCompatible trials − AccuracyIncompatible trials].
Post‐error adjustment effect (including both compatible and incompatible trials): [RTAfter incorrect trials − RTAfter correct trials]; [AccuracyAfter incorrect trials − AccuracyAfter correct trials].
Conflict‐adaptation effect (including both post‐correct and post‐error trials): [RTIncompatible trials following compatible trials − RTIncompatible trials following incompatible trials]; [AccuracyIncompatible trials following incompatible trials − AccuracyIncompatible trials following compatible trials].
Note: BDI: Beck Depression Inventory [Beck et al., 1961]; PANAS: Positive and Negative Affect Schedule [PA: positive affect, NA: negative affect; Watson et al., 1988]; STAI: State Trait Anxiety Inventory [State form; Spielberger et al., 1970]; MASQ: Mood and Anxiety Symptom Questionnaire [Watson et al., 1995; GDA: General Anxiety; AA: Anxious Arousal; GDD: General Depression; AD: Anhedonic Depression].