Table 1. WM Performance across Depressive State and Condition.
Experiment 1 | Experiment 2 | Experiment 3 | |||||
---|---|---|---|---|---|---|---|
<BDI-II cutoff n = 83 |
>BDI-II cutoff n = 40 |
Never depressed n = 14 |
MDD n = 13 |
Never depressed n = 19 |
Current MDD n = 25 |
Remitted MDD n = 24 |
|
Note. Neutral = proportion of words recalled correctly in the context of neutral sentences; depressogenic = proportion of words recalled correctly in the context of depressogenic sentences; < BDI-II cutoff = individuals scoring 14 or lower on the BDI-II; > BDI-II cutoff = individuals scoring 15 or higher on the BDI-II; never depressed = individuals with no history of MDD; current MDD = individuals currently suffering from MDD; remitted MDD = individuals in remission from MDD; valence = effect comparing negative versus neutral trials; group = effect of group on WMC; Valence × Group = interaction between valence and group. | |||||||
a Effect size comparing never depressed vs. combined remitted and MDD for comparison with Experiment 1 and 2. For effect sizes across all three groups, please see main text. | |||||||
Neutral M (SD) | .53 (.17) | .48 (.13) | .50 (.15) | .43 (.17) | .56 (.15) | .48 (.16) | .53 (.16) |
Depressogenic M (SD) | .56 (.19) | .52 (.16) | .53 (.22) | .47 (.19) | .60 (.13) | .51 (.17) | .53 (.19) |
aWMC | .03 (.09) | .04 (.08) | .03 (.12) | .04 (.09) | .04 (.12) | .04 (.09) | .00 (.10) |
Effect sizes (ηp2) | |||||||
Valence | ηp2 = .15 | ηp2 = .13 | ηp2 = .06 | ||||
Group | ηp2 = .02 | ηp2 = .04 | ηp2 = .01 | ||||
Valence × Groupa | ηp2 = .01 | ηp2 = .02 | ηp2 = .01 | ||||
Bayes factor in support of null hypothesis (BF01) and posterior probability for the experimental hypothesis p(H1, D) | |||||||
Valence | BF01 = 4.53−4; p(H1, D) = 1 | BF01 = .58; p(H1, D) = .63 | BF01 = .88; p(H1, D) = .52 | ||||
WMC: Group | BF01 = 1.87; p(H1, D) = .35 | BF01 = 1.87; p(H1, D) = .35 | BF01 = 1.13; p(H1, D) = .47 | ||||
Valence × Group | BF01 = 3.25; p(H1, D) = .23 | BF01 = 2.61; p(H1, D) = .28 | BF01 = 3.26; p(H1, D) = .23 |