Table 2.
Means (SDs) for dependent variables in low and high anxiety groups. CXT+, anxiety context (paired with US during acquisition); CXT−, safety context (no US); ITI, intertrial interval. Valence, arousal, anxiety, and US-expectancy ratings were assessed on a scale from 0 (very negative/no arousal at all/no anxiety at all/no expectancy at all) to 100 (very positive/very high arousal/very high anxiety/definitely expected).
| Low anxiety group (n = 24)
|
High anxiety group (n = 25)
|
|||||
|---|---|---|---|---|---|---|
| CXT+ | CXT− | ITI | CXT+ | CXT− | ITI | |
| SCL (log) | ||||||
| Acquisition 1 | 0.609 (0.156) | 0.606 (0.152) | 0.609 (0.153) | 0.607 (0.178) | 0.599 (0.174) | 0.600 (0.177) |
| Acquisition 2 | 0.579 (0.179) | 0.568 (0.177) | 0.573 (0.176) | 0.570(0.179) | 0.562 (0.186) | 0.568 (0.181) |
| Extinction | 0.552 (0.186) | 0.547 (0.185) | 0.548 (0.185) | 0.558 (0.182) | 0.560 (0.180) | 0.558 (0.181) |
| Valence | ||||||
| Acquisition 1 | 52.29 (16.02) | 55.63 (14.32) | 48.96 (15.88) | 44.00(18.65) | 59.32 (15.05) | 46.40 (16.04) |
| Acquisition 2 | 47.92 (14.52) | 53.67 (17.46) | 49.17 (13.49) | 41.60(20.60) | 59.20 (22.90) | 44.40 (16.09) |
| Extinction | 50.83 (12.83) | 53.54(15.21) | 44.17 (16.13) | 50.80(16.50) | 60.12 (19.74) | 45.20 (14.18) |
| Arousal | ||||||
| Acquisition 1 | 30.21 (25.13) | 23.54(25.56) | 14.79 (22.53) | 38.40(27.49) | 23.80 (23.15) | 19.20 (21.39) |
| Acquisition 2 | 31.25 (25.21) | 24.79(25.17) | 19.37 (21.48) | 32.60(32.95) | 19.20 (23.26) | 18.00(23.63) |
| Extinction | 25.21 (24.65) | 19.79(21.79) | 13.75 (21.63) | 23.00(23.09) | 14.20 (16.43) | 12.20 (16.46) |
| Anxiety | ||||||
| Acquisition 1 | 17.71 (22.26) | 14.17 (21.70) | 9.37 (13.70) | 27.00(25.66) | 12.12 (14.34) | 12.00(15.81) |
| Acquisition 2 | 18.33 (23.02) | 12.71 (17.51) | 10.00 (14.14) | 26.60(30.37) | 13.20 (18.81) | 14.00(18.93) |
| Extinction | 15.00 (19.78) | 12.92(16.81) | 11.04 (16.15) | 19.00(21.36) | 11.28 (17.11) | 11.68 (18.81) |
| US-expectancy | ||||||
| Acquisition 2 | 80.21 (25.47) | 27.38 (33.20) | 20.62 (32.18) | 82.36 (18.51) | 29.96 (30.18) | 26.80 (27.04) |
| Extinction | 57.50 (32.74) | 30.63 (28.07) | 17.29 (23.82) | 51.20(29.77) | 27.40 (30.18) | 17.20 (23.37) |