罗奈特:致力于核能和平利用与发展

罗奈特教授作为外籍专家,目睹了中国改革开放以来的飞速发展。其实,中国的发展离不开千千万万像罗奈特教授一样的外籍专家和友好人士的关心与支持。     

<Emphasis Type=Bold>Interstate Migration and Employer-to-Employer Transitions in the United States: New Evidence From Administrative Records Data</Emphasis>

Declines in migration across labor markets have prompted concerns that the U.S. economy is becoming less dynamic. In this study, we examine the relationship between residential migration and employer-to-employer transitions in the United States, using both survey and administrative records data. We first note strong disagreement between the Current Population Survey (CPS) and other migration statistics on the timing and severity of any decline in U.S. interstate migration. Despite these divergent patterns for overall residential migration, we find consistent evidence of a substantial decline in economic migration between 2000 and 2010. We find that composition and the returns to migration have limited ability to explain recent changes in interstate migration.     

How much ambiguity aversion?

Experimental results on the Ellsberg paradox typically reveal behavior that is commonly interpreted as ambiguity aversion. The experiments reported in the current paper find the objective probabilities for drawing a red ball that make subjects indifferent between various risky and uncertain Ellsberg bets. They allow us to examine the predictive power of alternative principles of choice under uncertainty, including the objective maximin and Hurwicz criteria, the sure-thing principle, and the principle of insufficient reason. Contrary to our expectations, the principle of insufficient reason performed substantially better than rival theories in our experiment, with ambiguity aversion appearing only as a secondary phenomenon.