This paper proposes a new test for adverse selection in insurance markets based on observable characteristics of insurance buyers that are not used in setting insurance prices. The test rejects the null hypothesis of symmetric information when it is possible to find one or more such “unused observables” that are correlated both with the claims experience of the insured and with the quantity of ...

This study examines Taiwanese tone sandhi, which is hypothesized here as a process of choosing between two allomorphs that are both listed in the lexicon. A production experiment was designed to test this hypothesis. Effects of age group, allomorph frequency, and positions of the morpheme were examined in the experiment. The results showed that (1) older speakers had significantly higher accura...

This pat)er t)resents some techniques for selecting linguistically adequate hypol;heses of new grammat.foal knowledge to be used as resources of gralmnatical knowledge acquisition. In our framework of liuguistic knowledge acquisition, a rulebased hypothesis generator is inw)ked in case of parsing failures and all the possible hypotheses of Llew graliLlnar rules or lexical entries are generated ...

Anthropic bias : observation selection effects in science and philosophy / by Nick Bostrom. p. cm. — (Studies in philosophy) Includes bibliographical references and index.

Two expected utility models are considered for a multi-period portfolio selection task of a special nature: the generalized logarithmic and negative exponential models. A weak version of the models is formulated in which the single parameter of each of the models is allowed to vary freely from one period to another in order to account for observed individual differences between subjects as well...

Models of risky choice have attracted much attention in behavioural economics. Previous research has repeatedly demonstrated that individuals’ choices are not well explained by expected utility theory, and a number of alternative models have been examined using carefully selected sets of choice alternatives. The model performance however, can depend on which choice alternatives are being tested...