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71.
A package for the stochastic simulation of discrete variables with assigned marginal distributions and correlation matrix is presented and discussed. The simulating mechanism relies upon the Gaussian copula, linking the discrete distributions together, and an iterative scheme recovering the correlation matrix for the copula that ensures the desired correlations among the discrete variables. Examples of its use are provided as well as three possible applications (related to probability, sampling, and inference), which illustrate the utility of the package as an efficient and easy-to-use tool both in statistical research and for didactic purposes. 相似文献
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Recent experiments with the Dictator Game (and the ensuing discussions) have been affected by considerable confusion regarding the purpose of this design. A common complaint is that the design gives rise to fragile regularities and therefore is of little use for theory-testing. We take issue with this view, and instead argue that the Dictator Game is potentially a very useful tool for experimental game theory, if properly used. It is particularly useful for investigating social norms, but economists have failed to take advantage of the Dictator Game because they still lack an adequate theory of norms. 相似文献
74.
Elvira Cicognani Luca Pietrantoni Luigi Palestini Gabriele Prati 《Social indicators research》2009,94(3):449-463
This study, involving a sample of 764 emergency workers, investigates dimensions of quality of life at work (Compassion fatigue,
Burnout and Compassion satisfaction), and their relationships with Coping strategies and some psychosocial variables (Sense
of Community, Collective Efficacy and Self-efficacy). Results indicate the usefulness of distinguishing between positive and
negative indicators of emergency workers’ quality of life. Compassion satisfaction is positively correlated with efficacy
beliefs, Sense of Community and the use of Active coping strategies. Burnout and Compassion fatigue are especially correlated
with the use of dysfunctional coping strategies like distraction and self-criticism. Volunteer emergency workers enjoy a higher
well being than full-time professional workers. Results and their implications for interventions aimed at increasing rescue
workers’ quality of life by enhancing psychosocial competences are discussed. 相似文献
75.
Population learning in dynamic economies traditionally has been studied in contexts where payoff landscapes are smooth. Here, dynamic population games take place over “rugged” landscapes, where agents are uncertain about payoffs from bilateral interactions. Notably, individual payoffs from playing a binary action against everyone else are uniformly distributed over [0, 1]. This random population game leads the population to adapt over time, with agents updating both actions and partners. Agents evaluate payoffs associated to networks thanks to simple statistics of the distributions of payoffs associated to all combinations of actions performed by agents out of the interaction set. Simulations show that: (1) allowing for endogenous networks implies higher average payoff compared to static networks; (2) the statistics used to evaluate payoffs affect convergence to steady-state; and (3) for statistics MIN or MAX, the likelihood of efficient population learning strongly depends on whether agents are change-averse or not in discriminating between options delivering the same expected payoff. 相似文献
76.
Becquet Valentine Sacco Nicolás Pardo Ignacio 《Population research and policy review》2022,41(3):1295-1323
Population Research and Policy Review - A preference for sons and a sex selection against females are widespread in vast regions of the world, including a great number of Asian and East European... 相似文献
77.
Antonio Luigi Paolilli 《Journal of Socio》2009,38(1):60-71
The principal aim of this paper is to present an evolutionary model based on a simple inequality system which shows how altruism can increase exchanges of goods and services, in order to study the conditions which can permit the emergence and prevalence of altruistic behaviors. We will show that given certain conditions, and even without considering group selection, kin selection or reciprocal altruism, altruists may have a greater probability of survival than egoists. 相似文献
78.
We study consumer liquidity in a general equilibrium model where the friction is the nonpledgeability of future income. Liquidity helps to overcome the absence of a double coincidence of wants. Consumers over‐hoard liquidity and the resulting competitive equilibrium is constrained inefficient. Fiscal policy following a large negative shock can increase ex‐ante welfare. If the government cannot commit, the ex‐post optimal fiscal policy will be too small from an ex‐ante perspective. The model throws light on the holding of foreign reserves in international markets. 相似文献
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This study examined whether people are more maritally satisfied when the valence of their partner's view of them is congruent with the valence of their self‐view. In doing so, competing hypotheses derived from self‐verification theory and self‐esteem enhancement theory were examined. Married couples, recruited from the community and mental health facilities, completed measures of marital satisfaction, self‐esteem, depression, and rated their spouse on a wide array of personality traits, both depressionrelated and depressionneutral. Regardless of self‐esteem and depression level, and across trait categories, targets were more maritally satisfied when their partners viewed them positively and less satisfied when their partners viewed them negatively. Thus, findings were inconsistent with self‐verification theory and consistent with a self‐esteem enhancement model. 相似文献