Das im Jahre 1951 von KENNETH J. ARROW entwickelte Theorem besagt, daß es unmöglich ist, aus offengelegten individuellen Präferenzen über soziale Zustände eine soziale Wohlfahrtsfunktion abzuleiten, wenn man bestimmte Bedingungen für kollektive Rationalität zugrunde legt. Im folgenden...

"It is well-known that 50% or more of all jobs are obtained through informal channels i.e. connections to family or friends. As well, statistical studies show that observable individual factors account for only about 50% of the very wide variation in earnings. We seek to explain these two facts...

A group of economists and scientists met at Stanford University on October 18, 2008 to discuss the role of research and development in developing effective policies for addressing the adverse potential consequences of climate change. We believe that climate change is a serious issue that...

The extent of genetic diversity in food crops is important as it affects the risk of attack by pathogens. A drop in diversity increases this risk. Farmers may not take this into account when making crop choices, leading to what from a social perspective is an inadequate level of diversity.

We are interested in three related questions: (1) How should accounting prices be estimated? (2) How should we evaluate policy change in an imperfect economy? (3) How can we check whether intergenerational well-being will be sustained along a projected economic programme? We do not presume that...

We are interested in three related questions: (1) How should accounting prices be estimated? (2) How should we evaluate policy change in an imperfect economy? (3) How can we check whether intergenerational well-being will be sustained along a projected economic programme? We do not presume that...