Table 2.
Table 2 displays estimates of ln(k) calculated from hyperbolic modeling of indifference scores in the primary sample (n=4,357). (a) displays ln(k) for overall discounting, sex, and parental demographic variables. (b) displays ln(k) estimates for familial substance use variables.
| a: Demographic ln(k) Estimates | |
| ln(k) | |
| Overall | |
| All Adolescents | −1.75 |
| Sex | |
| Male | −1.59 |
| Female | −1.91 |
| Household Income | |
| <$50k | −1.31 |
| >=$50k – <$100k | −1.76 |
| >$100k | −1.99 |
| Education | |
| <HS Diploma | −0.87 |
| HS Diploma/GED | −0.99 |
| Some College | −1.39 |
| Bachelor’s Degree | −1.91 |
| Post Graduate Degree | −2.00 |
| Marital Status | |
| Married | −1.89 |
| Never Married | −0.99 |
| Lives with Partner | −1.37 |
| Divorced | −1.67 |
| Separated | −1.28 |
| b: Substance Use ln(k) Estimates | |
| ln(k) | |
| Family Substance Use History | |
| Parent Alcohol Problems | −1.35 |
| No Parent Alcohol Problems | −1.78 |
| Parent Drug Problems | −1.80 |
| No Parent Drug Problems | −1.70 |
| Any Prenatal Substance Use Exposure | −1.67 |
| Prenatal Exposure After Pregnancy Knowledge | −1.62 |
| No Prenatal Substance Use Exposure | −1.77 |