The U.S. Social Security system has helped keep many retirees out of poverty. However, according to the Social Security and Medicare Trustees, Social Security faces a future financial shortfall of $10.4 trillion in present value. This enormous imbalance has received little attention in public...

This paper examines how households should optimally allocate their portfolio choices between risky stocks and risk-free bonds over their lifetime. Traditional lifecycle models in previous work suggest that the allocation toward stocks should start high (near 100%) early in life and decline over...

Security markets between generations are naturally incomplete in a laissez-faire economy since risk sharing agreements cannot be made with the unborn. But suppose that generations could trade if, for example, a representative of the unborn negotiated on their behalf today. What would the trades...

This paper documents and explains the existence of grade non-disclosure policies in Masters in Business Administration programs, why these policies are concentrated in highly-ranked programs, and why these policies are not prevalent in most other professional degree programs. Related policies,...

This paper seeks to explain the key two stylized facts of fundamental reforms to social security systems worldwide: Why have so many countries reformed when traditional systems seem, at first glance, to have a higher probability of delivering a secure retirement income? Why have these reforms...

While the Sharpe ratio is still the dominant measure for ranking risky assets, a substantial effort has been made over the past three decades to find a way to account for non-Normally distributed risks. This paper derives a generalized ranking measure which, under a regularity condition,...

Public attention has focused on how the launch of the national health exchanges could impact the types of risks who initially enroll and thereby affect future premiums and enrollment. We introduce simple dynamics into a standard model of insurance under adverse selection to show that such...

This paper investigates the long-run incidence of the corporate income tax in an open-economy model calibrated with two economies: the United States and a larger mirror economy representing the rest of the world. Imperfect substitutability of domestic and foreign products plays a key role in...

About three-quarters of secondary schools are reluctant to vigorously enforce smoking bans due to various social pressures; ten percent of these schools do not have bans at all. Empirically, school-based smoking regulations appear, at best, ineffective at reducing teenage smoking and, more...

This paper compares two general methods of privatization social security: forced participation in the new privatized system vs. letting people choose between the new system or staying in social security (i.e., opting out). Simulations are performed using a large scale perfect-foresight OLG...