Compensation principle

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The compensation principle in welfare economics refers to a decision rule used to select between pairs of alternative feasible social states. One of these states is the the hypothetical point of departure ("the original state"). According to the compensation principle, if the prospective gainers could compensate (any) prospective losers and leave no one worse off, the other state is to be selected (Chipman, 1987, p. 524). An example of a compensation principle is the Pareto criterion in which a change in states entails that such compensation is not merely feasible but required. Two variants are:

  • the Pareto principle, which requires any change such that all gain.
  • the (strong) Pareto criterion, which requires any change such that at least one gains from the change.

In non-hypothetical contexts such that the compensation occurs (say in the marketplace), invoking the compensation principle is unnecessary to effect the change. But its use is more controversial and complex where full compensation is feasible but not made and in selecting among more than two feasible social states. In its specifics, it is also more controversial where the range of the decision rule itself is at issue.

Uses for the compensation principle include:

[edit] See also

[edit] References

  • John S. Chipman, 1987, “compensation principle," The New Palgrave: A Dictionary of Economics, v. 1, pp. 524-31
  • Kenneth J. Arrow, 1963, Social Choice and Individual Values, ch. IV
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