Table 8 Delay of gratification task: effect sizes
From: Impulsivity: present during euthymia in bipolar disorder? - a systematic review
Study | BD group | Control group | Effect size |
|---|---|---|---|
Mean (SD) | Mean (SD) | ||
Ibanez et al. (2012) | N = 13 | N = 25 |  |
IGT net score | 1526.5 (483.0) | 1847.1 (564.1) | -0.60 |
IGT blocks 1 and 2 | -1.3 (7.9) | 0.65 (7.1) | -0.26 |
IGT blocks 3 and 4 | 1.0 (8.4) | 4.3 (8.2) | -0.41 |
Malloy-Diniz et al. (2011) | N = 95 | N = 94 |  |
IGT net score | 3.89 (24.28) | 20.57 (23.61) | -0.70 |
IGT block 1 | 1.87 (4.47) | 1.2 (5.99) | 0.13 |
IGT block 2 | 0.49 (5.18) | 2.14 (6.80) | -0.28 |
IGT block 3 | 1.20 (6.72) | 5.68 (6.84) | -0.66 |
IGT block 4 | 1.40 (7.68) | 6.93 (8.07) | -0.70 |
IGT block 5 | 1.52 (8.92) | 6.78 (9.13) | -0.58 |
Strakowski et al. (2010) | N = 31 | N = 35 |  |
Delayed reward task (% impulsive) | 31 (26) | 28 (23) | 0.25 |