The effect of taxation on labour supply: the case of moonlighting

The authors provide a simple test of supply-side economics by estimating the responsiveness of moonlighting labour supply to changes in the marginal tax rate and the wage rate. While standard theory teachers that changes in taxes and wage should have opposite and equal effects on labour supply, taxes affect the entire asset position of the household. In the short run, an adjustment of hours in the second job may be the only option available to an individual in responding to a tax change. Thus, analyses based on after-tax wages may understate supply-side effects. To estimate these effects a tobit procedure is employed. The empirical results suggest a backward-bending supply curve over thet range of moonlighting hours. Data consist of a subsample of male blue-collar workers from the 1978 cross-section of the Panel study of Income Dynamics.     

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Network externalities and long-run market shares

We study a dynamic duopoly model with network externalities. The value of the product depends on the current and past network size. We compare the market outcome to a planner. With equal quality products, the market outcome may result in too little standardization (i.e. too many products active in the long run) but never too much. The potential inefficiency is non-monotonic in the strength of the network effect, being most likely for intermediate levels. When products differ in quality, an inferior product may dominate even when the planner would choose otherwise, but only if the discount factor is sufficiently large     

A Paleoeconomic Theory of Co-Evolution and Extinction of Domesticable Animals

One Pleistocene mystery is why early North Americans eradicated their large, potentially domesticable animals (e.g., horses), whereas early Europeans did not. A commonly‐held hypothesis is that European species were evasive due to co‐evolution with hominids, whereas North American animals were naïve and unable to adapt quickly enough when experienced human hunters arrived from Eurasia. We explore this hypothesis with a paleoeconomic model of co‐evolution that integrates human hunting investments and wildlife population responses. We find that investments in hunting ability, based on the relative scarcity of prey species, could have mattered more than wildlife ‘naivety’ in explaining the extinction.     

The multi-national corporations: Considerations for a scenario

Although multi-national corporations have been one of the main customers for future-oriented activities such as technological forecasting, precious little attention has been paid to their development either in the work of the so-called establishment futurists or in the work of their more ‘radical’ colleagues. It is argued that these companies will be increasingly free of control at the international level though under greater scrutiny at the national level. It is likely that they will become increasingly intertwined with both national and international governing bodies, and be seen as arms of these governing bodies rather than as the traditional profit-maximising organisations.     

A Review of Issues Pertinent to Liquid Fuel Policy*

This paper provides a schematic review of economic issues pertinent to liquid fuel policy, with emphasis on the Australian setting. Pricing and depletion are considered in the context of possible disruption of import supplies. Subsequent sections deal with substitutes, R & D and exploration, storage, and demand-side intervention. Consideration is given to the arguments that conservation is intrinsically desirable or, conversely, that domestic energy supplies ought to be priced ‘reasonably’ to consumers. Concluding remarks address the efficiency-equity conflict in domestic oil pricing, oil as a ‘political’good, and the relation between political and economic costs of import dependence.