| | Psychological Reward | Behavioral Reward |
|---|
Estimate | Std. Error | df | t value | Pr(>|t|) | Estimate | Std. Error | df | t value | Pr(>|t|) |
|---|
(Intercept) | − 0.12 | 0.37 | 3025.16 | − 0.34 | 0.73 | − 0.21 | 0.38 | 2740.91 | − 0.57 | 0.57 |
Reward | −1.95 | 1.05 | 58.53 | −1.85 | 0.07 | −1.30 | 1.07 | 82.70 | −1.22 | 0.23 |
Anhedonia | −0.34 | 0.47 | 3016.11 | −0.72 | 0.47 | 0.43 | 0.50 | 2717.76 | 0.86 | 0.39 |
PAreactivity | −0.42 | 0.02 | 3079.97 | −26.37 | 0.00 | −0.46 | 0.02 | 2790.69 | −27.44 | 0.00 |
Time2 | 0.00 | 0.00 | 3065.95 | 4.08 | 0.00 | 0.00 | 0.00 | 2762.56 | 4.02 | 0.00 |
Reward:Anhedonia | −1.63 | 1.48 | 68.01 | −1.10 | 0.27 | 0.33 | 1.46 | 77.50 | 0.23 | 0.82 |
- Dependent variable is PA recovery difference score (PA t + 1 - PA) provided that a Psychological Reward has not been reported on t + 1 (again); PA = the average of feeling relaxed, happy, and euphoric; Time = the number of minutes between t-1 and t; Reward = Psychological Reward, asked as ‘Did you experience a positive event since the last assessment?’ with possible answers Yes (1) or no (0); Anhedonia = participant in control group (0) or group of participants with MDD and anhedonia (1)?; PA reactivity = person-mean centered PA reactivity difference score (i.e., PA - PA t-1). To maintain a familywise error rate of .05 over all analyses of PA recovery (see Additional file 1), a Bonferroni-correction of a’ = 1-(1-a)1VeffLi was be applied with VeffLi being the ‘effective number’ of independent tests corrected for the correlation amongst the different predictors. Using the approach proposed by Li & Ji [39], we calculated that a p < .01 is required to keep Type I Error Rate at 5% accordingly (for the full calculations, please see the Additional file 1 or Rmarkdown file of the Additional file 1 on Open Science Framework: https://osf.io/8gxrw/)
