| inc85 | = total earnings of individual i in 1985 (in dollars) |
| SAT | = actual or imputed SAT scores \footnote{Imputed SAT scores are based on ACT scores (when available) or on a battery of tests administered to all NLS72 survey participants. |
| HSrank | = percentile rank in high school class |
| nsib | = number of siblings of the respondent (in 1972) |
| linc | = natural log of parents' income in 1972 |
| HSwork | = number of hours worked per week by the respondent while a high school senior |
| Eng | = 1 if English is not the primary language spoken in the respondent's home while in high school |
| sibcol | = 1 if the respondent had one or more siblings in college in 1972 |
| HSact | = 1 the respondent participated in one or more high school clubs or activities (= 0 otherwise) |
| HSlead | = 1 if the respondent was a leader in one or more high school clubs or activities (= 0 otherwise) |
| rur72 | = 1 if the respondent lived in a rural area in 1972 (= 0 otherwise) |
| urb72 | = 1 if the respondent lived in an urban area in 1972 (= 0 otherwise) |
| Catholic | = 1 if the respondent is Catholic |
| Jewish | = 1 if the respondent is Jewish |
| mwork | = number of months worked at two most recent jobs |
| ww | = total weeks worked during the years 1972-1979 |
| SC | = 1 if the individual has completed 1-3 years of college (= 0 otherwise) |
| CD | = 1 if the individual has a B.A. or B.S. degree (= 0 otherwise) |
| MA | = 1 if the individual has a master's degree (= 0 otherwise) |
| PHD | = 1 if the individual has a Ph.D., J.D., MD degree (= 0 otherwise) |
| NE | = 1 if the individual lived in the northeast (= 0 otherwise) |
| South | = 1 if the individual lived in the south (= 0 otherwise) |
| Black | = 1 if the individual is African-American (= 0 otherwise) |
| Asian | = 1 if the individual is Asian-American (= 0 otherwise) |
| Native | = 1 if the individual is native American (=0 otherwise) |
| Hisp | = 1 if the individual is Hispanic (= 0 otherwise) |
| Female | = 1 if the individual is female (= 0 otherwise) |
| MLHS | = 1 if the respondent's mother did not finish high school (=0 otherwise) |
| MSC | = 1 if the highest level of education for the respondent's mother is 1-3 years of college (=0 otherwise) |
| MCD | = 1 if the highest level of education for the respondent's mother is a bachelor's degree (=0 otherwise) |
| MGRAD | = 1 if the respondent's mother completed a graduate degree (=0 otherwise) |
| FLHS | = 1 if the respondent's father did not finish high school (=0 otherwise) |
| FSC | = 1 if the highest level of education for the respondent's father is 1-3 years of college (=0 otherwise) |
| FCD | = 1 if the highest level of education for the respondent's father is a bachelor's degree (=0 otherwise) |
| FGRAD | = 1 if the respondent's father completed a graduate degree (=0 otherwise) |
| Married | = 1 if the respondent is married in 1986 (= 0 otherwise) |
| Div | = 1 if the respondent is divorced in 1986 (= 0 otherwise) |
| Nkids | = number of children of the respondent |
Source: National Longitudinal Study of the High School Class of 1972
The sample consists of 4781 individuals who for provided responses to the questions needed to construct the variables listed above.
