Table 3.
Nonparametric correlations between experimental measures
| DD b | DD k | PD b | PD k | 10% Sucrose |
D1 Loco# |
D1–D5 Loco# |
|
|---|---|---|---|---|---|---|---|
| DD b | |||||||
| DD k |
.687** (<.001) |
||||||
| PD b | .326 (.129) |
.177 (.419) |
|||||
| PD k | .241 (.268) |
.460* (.027) |
.582** (.004) |
||||
| 10% Sucrose | −.498* (.016) |
−.600** (.002) |
.093 (.672) |
.043 (.847) |
|||
| D1 Loco# | .564 (.071) |
.255 (.450) |
.364 (.272) |
.355 (.285) |
.236 (.484) |
||
| D1–D5 Loco# | .300 (.370) |
.227 (.502) |
−.245 (.467) |
−.109 (.750) |
−.209 (.537) |
.627* (.039) |
|
Data shown are Spearman’s rho (p-value).
*
p < 0.05,
**
p < 0.01. Correlations between performance measures that were significant at the p < 0.05 level are indicated by bold type. Abbreviations: PD: probability discounting, DD: delay discounting, 10% Sucrose: the amount of sucrose consumed in g/kg body weight, D1 Loco: locomotor activity on day 1, D1–D5 Loco: locomotor activity on day 5 minus locomotor activity on day 1 (habituation);
#
denotes n = 11, all other n = 23.