Calibration Results for Non‐Expected Utility Theories

Rabin (2000) proved that a low level of risk aversion with respect to small gambles leads to a high, and absurd, level of risk aversion with respect to large gambles. Rabin's arguments strongly depend on expected utility theory, but we show that similar arguments apply to general non‐expected utility theories.     

Organizational processes and gender integration in operational military units: An Israel Defense Forces case study

This study examines collective action by men and women in operational military units deployed on Israel's borders. Gender integration is generally perceived by soldiers and commanders in these units as a trivial matter rather than an issue for discussion or a disadvantage. The integration results from organizational qualities, which include military leadership with accumulated experience in gender integration; division of labour between men and women that gradually develops during protracted training; screening processes within the units; and professional development of commanders. Our findings negate a large corpus of sociological literature on gender integration in military organizations. We discuss the micro‐social processes that enable or deter mixed‐gender integration in operational units. Our findings are presented as an alternative to arguments on the inevitable marginality of women in the military and that equality is neither a prerequisite of a cohesive mixed‐gender unit nor a barrier for the inclusion of women into combat units.     

Correlated effects of the response to conditioned medium in the flour beetle,Tribolium castaneum

Summary Dispersal rates were measured in lines selected for high and low response of egg production to conditioned media, and responsivness of egg production was measured in lines selected for high and low dispersal. A positive correlation was found between these two traits, each of which had previously been found to have a simple genetic basis. It is suggested that inTribolium castaneum the sensitivity to environmental conditions is mediated through a Sensor gene, which can activate either response, according to circumstances.     

No externalities: a characterization of efficiency and incentive compatibility with public goods

We show that efficient anonymous incentive compatible (dominant strategy) mechanisms for public goods eliminate externalities, i.e., each individual is unable to change the welfare of anyone else. The characterization is used to derive existence and non-existence results for models with a finite number of individuals and to explain existence results in the continuum. A similar characterization and conclusions are demonstrated for private goods in (J Econ Theory 85:169–225, 1999). However, unlike private goods, elimination of externalities with public goods implies that individuals cannot change the outcome. Hence, such mechanisms provide only weak incentives for truth-telling.     

Migration,Time, and Religioethnic Identification Among U.S. Jews1

This article examines changes between 1985–1990 and 1995–2000 in relationships between migration and religioethnic identification among U.S. Jews. The results of multivariate analyses of the 1990 and 2000 National Jewish Population Surveys show that Jewish background characteristics have lost their significance as determinants of internal migration and, especially, migration across state boundaries. Concurrently, migration no longer constitutes a serious threat to group continuity and erstwhile negative effects on major religious and social behaviors have disappeared. When the two surveys were integrated into one data set, it was found that “time” enhances the inclination of Jews to move and strengthens their religious and ethnic commitments (though not their commitments to informal Jewish networks). The results are discussed in reference to three competing perspectives of migration‐identification relationships—“selectivity,”“disruption,” and “heightening”—and in the wider theoretical context of religious and ethnic processes in the contemporary United States.     

Non-expected utility risk premiums: The cases of probability ambiguity and outcome uncertainty

This paper discusses two problems. (a) What happens to the conditional risk premium that a decision maker is willing to pay out of the middle prize in a lottery to avoid uncertainty concerning the middle prize outcome, when the probabilities of other prizes change? (b) What happens to the increase that a decision maker is willing to accept in the probability of an unpleasant outcome in order to avoid ambiguity concerning this probability, when this probability increases? We discuss both problems by using anticipated utility theory, and show that the same conditions on this functional predict behavioral patterns that are consistent both with a natural extension of the concept of diminishing risk aversion and with some experimental findings.