A common approach to defining equivalence scales is to consider a household modelled as if it maximizes a single utility function. This may be founded on an assumption of the household maximizing a welfare function of individual utilities. For a positive analysis of the household, this may be...

The time series nature of repeated surveys is seldom taken into account. I present a statistical model of repeated surveys and construct a computationally feasible estimator based on the Kalman filter. The novelty is that the estimator efficiently uses the whole underlying data set. However, for...

There is no consensus on how to measure interpersonally comparable, cardinal utility. Despite of this, people repeatedly make welfare evaluations in their everyday lives. However, people do not always agree on such evaluations, and this is one important reason for political disagreements. Thus,...

Cost-benefit analysis have been attacked by many critics because of its implicit ethical assumptions. The normative content of the method is at odds with the common attitude that economists should analyze how to reach given goals, while determination of the goals should be left to the...

Members of the Norwegian Parliament were interviewed about the decision process concerning national road investments. Most of them found cost-benefit analysis useful, but apparently not as a device for ranking projects. Rather, the cost-benefit ratio was used to pick project proposals requiring...

In addition to his role as a consumer pursuing his own interests, an individual may also regard himself as an ethical observer, judging matters from society's point of view. It is not clear which of these possibly conflicting roles respondents in contingent valuation studies take on. This leads...

In traditional cost-benefit analyses of public projects, every citizen's willingness to pay for a project is given an equal weight. This is sometimes taken to imply that cost-benefit analysis is a democratic method for making public decisions, as opposed to, for example, political processes...

This paper demonstrates that voluntary agreements between a regulator and an industry can be Pareto superior to environmental taxes. Further, such agreements may differ from direct regulation in a non-trivial way. The first-best optimum may be included in the set of possible agreements, even if...