This paper reports the results of a statistical summary of estimates of the marginal willingness to pay (MWTP) for reducing particulate matter from hedonic property value models developed between 1967 and 1988. Results using both ordinary least squares and minimum absolute deviation estimators suggest that market conditions and the procedures used to implement the hedonic models were important to the resulting MWTP estimates. The interquartile range for these estimated marginal values (measured as a change in asset prices) lies between zero and $98.52 (in 1982-84 dollars) for a one-unit reduction in total suspended particulates (in micrograms per cubic meter). The mean MWTP is nearly five times the median ($109.90 vs. $22.40), suggesting that outliers are important influences to any summary statistics for these estimates

This paper argues that a life cycle model can replicate observed patterns in household wealth accumulation after counting explicitly for precautionary saving and asset-based, means-tested social insurance. The authors demonstrate that social insurance programs with means tests based on assets discourage saving by households with low expected lifetime income. In addition, they evaluate the model using a dynamic programming model. Assuming common preference parameters across lifetime income groups, the authors are able to replicate the empirical pattern that low-income households are more likely than high-income households to hold virtually no wealth

Currently available health insurance contracts often fail to insure long-term illnesses: sick people can suffer large increases in premiums or denial of coverage. I describe insurance contracts that solve this problem. Their key feature is a severance payment. A person who is diagnosed with a long-term illness and whose premiums are increased receives a lump sum equal to the increased present value of premiums. This lump sum allows him or her to pay the higher premiums required by any insurer. People are not tied to a particular insurer or a group, and the improvement is free: insurance companies can operate at zero economic profits, and consumers can pay exactly the same premium they do with standard contracts.

This paper describes aspects of the French Revolution from the perspective of theories about money and government budget constraints. We describe how unpleasant fiscal arithmetic gripped the Old Regime, how the Estates General responded to reorganize France's fiscal affairs, and how fiscal exigencies impelled the Revolution into a procession of monetary experiments ending in hyper-inflation

Anarchy, defined as a system in which participants can seize and defend resources without regulation from above, is not chaos but rather a spontaneous order. However, anarchy is fragile and may dissolve either into formless 'amorphy' or into a more organized system such as hierarchy. Under anarchy, each contestant balances between productive exploitation of the current resource base and fighting to acquire or defend resources. Anarchy is sustainable only when there are strongly diminishing returns to fighting effort (the decisiveness parameter is sufficiently low) and incomes exceed the viability minimum. These considerations explain many features of animal and human conflict.

"Income smoothing" is the process of manipulating the time profile of earnings or earnings reports to make the reported income stream less variable. This paper builds a theory of income smoothing based on the managers' concern about keeping their position or avoiding interference, and on the idea that current performance receives more weight than past performance when one is assessing the future. When investment is added to the model, so that income reports and dividends can be set independently, we find that both dividends and income reports may be smoothed and that dividends may convey information not present in the income report

Household-level panel data from a nationally representative sample of rural Indian households describing the adoption and profitability of high-yielding seed varieties (HYVs) associated with the Green Revolution are used to test the implications of a model incorporating learning by doing and learning spillovers. The estimates indicate that imperfect knowledge about the management of the new seeds was a significant barrier to adoption; this barrier diminished as farmer experience with the new technologies increased; own experience and neighbors' experience with HYVs significantly increased HYV profitability; and farmers do not fully incorporate the village returns to learning in making adoption decisions.

This paper addresses the issue of credibility from an econometric perspective. It develops a rational expectations model of inflation in which the dynamics are driven by the level of government spending and by the effect of past inflation rates on the value of real taxes. Government expenditure is modeled as an exogenous autoregressive process subject to discrete changes in regime. The regimes are defined by whether the level of spending is or is not consistent with the rate of inflation targeted by the government as part of a stabilization program. In making their money demand decision, the agents need to construct probability inferences regarding the state of the expenditure process. Credibility is quantified by the agents' inferred probability that the joint observation of inflation, the nominal interest rate, and government spending is generated by the reformed expenditure regime. In an application to Israel, results indicate that the failed stabilization program of November 1984 was less than fully credible to the agents. The uncertainty about the true nature of the expenditure process partially explains the volatility of the rate of inflation in this period. In contrast, for the July 1985 program the agents correctly inferred a change in the regime driving the government spending process

This paper examines the link between property rights and investment incentives. The author develops three theoretical arguments based on security of tenure, using land as collateral and obtaining gains from trade. The paper then presents empirical evidence from two regions in Ghana. The author investigates the possibility that rights are endogenous, with farmers making improvements to enhance their land rights. Finally, he suggests tests for which of the theories might explain the results