Table 4.
Spearman Correlation and Partial Correlation Coefficients of Demographic Characteristics and Discounting Measures
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|
| 1. Age in years | − | |||||||
| 2. Gender (F = 0) | .34 | − | ||||||
| 3. Years of higher education | .64 | .22 | − | |||||
| 4. Years driving | .55 | .28 | .34 | − | ||||
| 5. TWD frequency (driving) | −.07 | .10 | −.17 | .13 | − | |||
| 6. TWD frequency (stopped) | −.06 | .09 | −.14 | .10 | .73 | − | ||
| (.71) | − | |||||||
| 7. AUC (DD) | .10 | .10 | .20 | −.22 | −.60 | −.46 | − | |
| (−.57) | (−.42) | − | ||||||
| 8. AUC (PD) | .13 | −.03 | .26 | −.21 | −.58 | −.45 | .94 | − |
| (−.53) | (−.41) | (.93) | − |
Note. The numbers in parentheses are partial correlation coefficients with the demographics controlled for. The numbers in bold indicate significant correlations (p < .05). TWD = texting while driving. AUC = Area under the Curve. DD = delay discounting. PD = probability discounting.