When doubt is a sure thing

Not a Sure Thing: Making Regulatory Choices

When change is not a good thing.

Over the past 40 years, our understanding of the epidemiology and natural history of a number of common chronic diseases has been markedly enhanced by serial, nationally representative, cross-sectional surveys such as the National Health and Nutrition Examination Survey (NHANES) (1 ), longitudinal cohorts such as the Atherosclerosis Risk in Communities (ARIC) study (2 ), and more disease-specif...

When is one thing equal to some other thing?

One can’t do mathematics for more than ten minutes without grappling, in some way or other, with the slippery notion of equality. Slippery, because the way in which objects are presented to us hardly ever, perhaps never, immediately tells us–without further commentary–when two of them are to be considered equal. We even see this, for example, if we try to define real numbers as decimals, and th...

When doing the wrong thing is right

 3つの異なる練習方法でダンスの学習効果を検証した.  marking練習は full-out練習よりも学習効果がある.  markingと full-outと共にmental simulation練習よりも学習効果がある.

Harsanyi’s theorem without the sure-thing principle

We study a version of Harsanyi’s theorem (Harsanyi, 1955) in a framework involving uncertainty. Without assuming the sure-thing principle but sticking to consequentialism, we obtain that a Paretian social aggregation should be affine and that all decision makers must use additively separable preferences that resembles expected utilities. Whenever preferences are state independent, we find that ...