Table 12

Multilevel model analysis coefficients and SEs for effort in reward-seeking

Multilevel model:
BDI pred. effort
(Intercept)5.64*** (0.29)
BDI (prop. score)0.15 (0.82)
Block−0.88 *** (0.02)
Gender0.73* (0.35)
Sample0.44 (0.53)
BDI (prop. score) × Block0.03 (0.06)
BDI (prop. score) × Gender−1.01 (1.03)
Block × Gender0.01 (0.03)
BDI (prop. score) × Sample−0.51 (1.64)
Block × Sample−0.07 (0.04)
Gender × Sample−1.29 (0.89)
BDI (prop. score) × Block × Gender0.00 (0.08)
BDI (prop. score) × Block × Sample0.17 (0.13)
BDI (prop. score) × Gender × Sample1.45 (3.81)
Block × Gender × Sample0.14+ (0.07)
BDI (prop. score) × Block × Gender × Sample−0.25 (0.32)
SD (intercept participant)1.32
SD (observations)1.98
Num. obs.37,677
R2 marg.0.276
R2 cond.0.499
AIC159,796.9
BIC159,950.6
ICC0.3
RMSE1.98

  • BDI (prop. score) = depression score on the Beck Depression Inventory II. Proportion scores are scores divided by total possible score. AIC = Akaike information criterion, BIC = Bayesian information criterion, ICC = intraclass correlation, RMSE = root mean squared error.

  • +p < 0.1, *p < 0.05, ***p < 0.001.