| Risky Behavior among Youths: An Economic Analysis Jonathan Gruber is a professor of economics at the Massachusetts Institute of Technology and a research associate and director of the Program on Children of the National Bureau of Economic Research. |
| Risky Behavior among Youths: An Economic Analysis Jonathan Gruber is a professor of economics at the Massachusetts Institute of Technology and a research associate and director of the Program on Children of the National Bureau of Economic Research. |