In this paper, we present an economic model of moral motivation. Consumers prefer regarding themselves as socially responsible individuals. Voluntary contributions to public goods are motivated by this preference. The self-image as socially responsible is determined by a comparison of one's...

Aslaksen et al. (1990) concluded that the petroleum wealth of Norway, and hence the permanent income from petroleum extraction, was as uncertain as the yearly oil revenues. Their conclusion was based on wealth estimates using official price projections, with no independent empirical analysis of...

It is shown that if social welfare is the sum of logaritmic utility function, the optimal income distribution and the welfare effect of any income redistribution is independet of the equivalence scales. In optimum all households have the same per capita income. Based on this observation it is...