Table 2.
Descriptives and Internal Reliabilities for Attention Bias Indices
| Early Vigilance | Baseline | Stress | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| M | SD | Split-Half Reliability | M | SD | Split-Half Reliability | |
|
| ||||||
| Happy | 0.58 | 0.08 | −.03(n=133,31 trials) – .17(n=94,36 trials) | 0.60 | 0.10 | .30(n=125,31 trials) – .11(n=85,36 trials) |
| Angry | 0.50 | 0.07 | −.49(n=133,32 trials) – −.46(n=93,36 trials) | 0.50 | 0.07 | .01(n=125,30 trials) – −.31(n=76,36 trials) |
| Sad | 0.49 | 0.06 | −.63(n=133,30 trials) – −1.07(n=95,36 trials) | 0.50 | 0.08 | −.27(n=125, 28 trials) – −.03(n=91,36 trials) |
| Sustained Attention | ||||||
| Happy | 0.57 | 0.06 | .70(n=133,31 trials) – .76(n=94,36 trials) | 0.57 | 0.07 | .76(n=125,31 trials) – .79(n=85,36 trials) |
| Angry | 0.53 | 0.05 | .56(n=133,32 trials) – .58(n=93,36 trials) | 0.52 | 0.05 | .67(n=125,30 trials) – .61(n=76,36 trials) |
| Sad | 0.51 | 0.05 | .44(n=133,30 trials) – .54(n=95,36 trials) | 0.52 | 0.05 | .51(n=125, 28 trials) – .66(n=91,36 trials) |
| Engagement | ||||||
| Happy | 469.84 | 55.97 | .66(n=131,5 trials) – .79(n=42,12 trials) | 469.80 | 57.20 | .43(n=123,5 trials) – .86(n=38,12 trials) |
| Angry | 480.50 | 64.31 | .62(n=132,5 trials) – .75(n=48,12 trials) | 476.60 | 66.24 | .52(n=123,5 trials) – .81(n=43,12 trials) |
| Sad | 478.64 | 63.49 | .67(n=129,5 trials) – .68(n=43,12 trials) | 467.93 | 55.41 | .67(n=123,5 trials) – .82(n=44,12 trials) |
| Disengagement | ||||||
| Happy | 469.98 | 60.95 | .75(n=131,5 trials) – .71(n=44,12 trials) | 466.81 | 53.23 | .77(n=123,6 trials) – .88(n=39,12 trials) |
| Angry | 465.03 | 52.95 | .58(n=132,5 trials) – .76(n=46,12 trials) | 465.45 | 51.70 | .57(n=121,5 trials) – .69(n=51,12 trials) |
| Sad | 471.18 | 63.53 | .68(n=131,5 trials) – .56(n=41,12 trials) | 467.71 | 54.10 | .61(n=124,6 trials) – .89(n=42,12 trials) |
Note. Early Vigilance is quantified as the proportion of trials in which participants initially oriented towards the emotional relative to the neutral stimulus. Sustained attention is quantified as the average proportion of fixations on the emotional relative to the neutral stimulus during the naturalistic viewing period. Engagement/Disengagement means are latencies in milliseconds. For early vigilance/sustained attention, split-half reliabilities are computed using the entire sample as well as a subsample with all 36 valid trials for each index of attention bias; trials were grouped temporally such that the first half of trials presented was compared to the second half of trials presented. For engagement/disengagement, participants’ data was excluded if they had less than three SD valid trials available for computation of the mean latency. Split-half reliabilities are computed using the entire sample as well as the subsample with all 12 valid trials for each index of attention bias; trials were grouped temporally such that the first half of trials presented was compared to the second half of trials presented.