Table 1.
Multi-model comparison and selection for individual monkeys. The first column specifies the pharmacological or environmental manipulation. Each sub-column gives the AICc of the Null model and the ΔAICc of competing models. A ΔAICc > 4 is significantly better than the Null model. The best model (lowest AICc) is indicated in bold, n is the number of observations and R2 is the proportion of variance accounted for by the best model.
| Mean | M1452 | M1473 | M1504 | M1488 | M1478 | M1480 | M1412 | M1414 | |
|---|---|---|---|---|---|---|---|---|---|
| D-Amphetamine | |||||||||
| AICc (Null, H0) | −428.2 | −62.4 | −99.4 | −239.3 | −104.5 | −57.0 | −63.0 | ||
| Δ (Full, sm, sp) | 602.0 | 22.4 | 107.1 | −12.9 | 122.8 | 262.2 | 129.0 | ||
| Δ (Magnitude, sm) | −4.4 | 18.0 | −24.0 | −4.4 | 13.3 | 3.1 | −3.2 | ||
| Δ (Price sp) | 473.5 | 15.1 | 78.2 | −1.7 | 47.1 | 291.7 | 167.0 | ||
| n | 15 | 25 | 19 | 25 | 25 | 24 | |||
| R2 | 0.999 | 0.983 | 0.996 | 0.999 | 0.991 | 0.999 | 0.999 | ||
| (+)-Phendimetrazine | |||||||||
| AICc (Null, H0) | −276.7 | −67.6 | −50.8 | −136.8 | −70.3 | ||||
| Δ (Full, sm, sp) | 271.1 | 57.8 | 118.1 | 172.7 | 46.9 | ||||
| Δ (Magnitude, sm) | 63.5 | 0.2 | 131.0 | −1.1 | −3.3 | ||||
| Δ (Price sp) | 298.2 | 93.2 | 89.3 | 184.5 | 58.8 | ||||
| n | 20 | 23 | 25 | 25 | |||||
| R2 | 0.991 | 0.999 | 0.999 | 0.999 | 0.977 | ||||
| (+)-Phenmetrazine | |||||||||
| AICc (Null, H0) | −425.8 | −106.8 | −74.4 | −73.8 | −104.6 | −83.5 | |||
| Δ (Full, sm, sp) | 163.7 | 30.7 | 170.5 | 3.0 | 128.1 | 145.5 | |||
| Δ (Magnitude, sm) | 58.2 | 28.2 | 4.2 | 4.7 | −4.5 | 144.4 | |||
| Δ (Price sp) | 203.8 | 30.4 | 136.0 | 14.8 | 139.9 | 93.1 | |||
| n | 25 | 25 | 25 | 25 | 25 | ||||
| R2 | 0.997 | 0.982 | 0.999 | 0.999 | 0.999 | 0.997 | |||
| Extinction | |||||||||
| AICc (Null, H0) | −234.5 | −30.4 | −29.1 | −45.0 | −33.9 | ||||
| Δ (Full, sm, sp) | 235.6 | 150.1 | 83.2 | 226.4 | 21.3 | ||||
| Δ (Magnitude, sm) | 13.2 | −1.6 | −8.4 | 34.2 | 3.1 | ||||
| Δ (Price sp) | 239.1 | 157.3 | 90.5 | 238.0 | 18.4 | ||||
| n | 15 | 15 | 15 | 15 | |||||
| R2 | 0.996 | 0.999 | 0.999 | 0.999 | 0.900 | ||||
Multi-model comparison and selection for individual monkeys. The first column specifies the pharmacological or environmental manipulation. Each sub-column gives the AICc of the Null model and the ΔAICc of competing models. A ΔAICc > 4 is significantly better than the Null model. The best model (lowest AICc) is indicated in bold, n is the number of observations and R2 is the proportion of variance accounted for by the best model.