Table 2 Computational model parameters and model-free task metrics by group and resistance condition.
From: Computational mechanisms underlying multi-step planning deficits in methamphetamine use disorder
Resistance Condition | HCs (n = 49) | iMUDs (n = 40) | Effect of Group | Contrast | |
|---|---|---|---|---|---|
Aversive Pruning (π) | F(1,100) = 16.46, p < 0.001, \({\eta }_{p}^{2}=0.14\) | iMUD = 0.33, HC = 0.15; t(100) = 4.06, p < 0.001, d = 0.81 | |||
No resistance | 0.18 (0.21) | 0.35 (0.19) | |||
Resistance | 0.19 (0.21) | 0.29 (0.18) | |||
Large-Loss Discounting Probability \((1-{\gamma }_{S})\) | F(1,100) = 13.45, p < 0.001, \({\eta }_{p}^{2}=0.12\) | iMUD = 0.49, HC = 0.33; t(100) = 3.67, p < 0.001, d = 0.74 | |||
No resistance | 0.35 (0.21) | 0.50 (0.18) | |||
Resistance | 0.36 (0.19) | 0.45 (0.17) | |||
No Large-Loss Discounting Probability \((1-{\gamma }_{G})\) | F(1,100) = 1.67, p = 0.199 | ns | |||
No resistance | 0.17 (0.06) | 0.15 (0.06) | |||
Resistance | 0.17 (0.06) | 0.16 (0.06) | |||
Reward Sensitivity (β) | F(1,100) = 3.01, p = 0.086 | ns | |||
No resistance | 0.08 (0.04) | 0.06 (0.03) | |||
Resistance | 0.07 (0.03) | 0.06 (0.03) | |||
Total Points Won | F(1,100) = 14.81, p < 0.001, \({\eta }_{p}^{2}=0.13\) | iMUD = 2034, HC = 3145; t(100) = 3.85, p < 0.001, d = 0.77 | |||
No resistance | 3009.18 (1230.88) | 2114.00 (1406.69) | |||
Resistance | 3004.29 (1021.07) | 2117.25 (1403.15) | |||
Percent OLL Trials Correct | F(1,490) = 25.30, p < 0.001, \({\eta }_{p}^{2}=0.05\) | iMUD = 0.19, HC = 0.35; t(99) = 3.99, p < 0.001, d = 0.45 | |||
No resistance | Depth 3 | 0.44 (0.32) | 0.26 (0.22) | ||
Resistance | 0.41 (0.31) | 0.26 (0.23) | |||
No resistance | Depth 4 | 0.38 (0.24) | 0.26 (0.20) | ||
Resistance | 0.34 (0.22) | 0.25 (0.18) | |||
No resistance | Depth 5 | 0.16 (0.16) | 0.10 (0.10) | ||
Resistance | 0.18 (0.14) | 0.11 (0.09) | |||
Percent ONLL Trials Correct | F(1,473) = 0.33, p = 0.568 | ns | |||
No resistance | Depth 3 | 0.87 (0.17) | 0.84 (0.20) | ||
Resistance | 0.91 (0.11) | 0.84 (0.23) | |||
No resistance | Depth 4 | 0.78 (0.26) | 0.77 (0.24) | ||
Resistance | 0.79 (0.23) | 0.70 (0.26) | |||
No resistance | Depth 5 | 0.65 (0.30) | 0.59 (0.28) | ||
Resistance | 0.61 (0.30) | 0.55 (0.27) | |||
