نتایج جستجو برای: d60
تعداد نتایج: 256 فیلتر نتایج به سال:
Gift giving is thought to be welfare decreasing. This claim rests on two key assumptions, namely, full information as to the whereabouts of all goods and the ability to reach the stores that contain desired goods costlessly. In this paper, we replace these two assumptions with the more realistic assumption of uncertainty about the location of goods. As a result, search costs ensue. In sharp con...
We provide an extensive and general investigation of the e¤ects on industry performance pro ts, social welfare and price-cost margins of exogenously changing the number of rms in Cournot markets. This includes an in-depth exploration of the well-known trade-o¤ between competition and production e¢ ciency. Most conventional beliefs actually require some quali cations to be valid. Under scale...
Development of a sexually dimorphic neuromuscular system involved in green anole courtship behavior.
During courtship and aggression, adult male green anoles (Anolis carolinensis) extend a large red throat fan called a dewlap. Adult females have a very small dewlap; they rarely use it during agonistic encounters and never during courtship. The motoneurons, nerve, muscle fibers, neuromuscular junctions, and cartilage pieces responsible for dewlap extension are all larger in adult males than fem...
We survey those recent developments in environmental and resource economics that have been prompted by a puzzling cultural phenomenon, where one group (usually natural scientists) sees in humanity's current use of Nature's services symptoms of a deep malaise, even while another group (usually economists) documents the fact that people today are on average better off in many ways than they had e...
Much of the extensive empirical literature on insurance markets has focused on whether adverse selection can be detected. Once detected, however, there has been little attempt to quantify its importance. We start by showing theoretically that the efficiency cost of adverse selection cannot be inferred from reduced form evidence of how “adversely selected” an insurance market appears to be. Inst...
We provide a new characterization of the Shapley value neither using the e¢ciency axiom nor the additivity axiom. In this characterization, e¢ciency is replaced by the gain-loss axiom (Einy and Haimanko, 2011, Game Econ Behav 73: 615621), i.e., whenever the total worth generated does not change, a player can only gain at the expense of another one. Additivity and the equal treatment axiom are ...
Happiness and Economic Growth: Does the Cross Section Predict Time Trends? Evidence from Developing Countries Based on point-of-time comparisons of happiness in richer and poorer countries, it is commonly asserted that economic growth will have a significant positive impact on happiness in poorer countries, if not richer. The time trends of subjective well-being (SWB) in 13 developing countries...
To build upon prior research demonstrating the potential of entomopathogenic nematode dissemination by infected adult Japanese beetle, Popillia japonica, we evaluated susceptibility of the adult beetles to 20 strains of Steinernema and Heterorhabditis under laboratory conditions. The nematodes were applied at a rate of 10,000 infective juveniles per 10 adult beetles in 148 mL plastic cups conta...
The idea that expanding work and consumption opportunities always increases people’s wellbeing is well established in economics but finds no support in psychology. Instead, there is evidence in both economics and psychology that people’s life satisfaction depends on how experienced utility compares with expectations of life satisfaction or decision utility. In this paper I suggest that expandin...
In elections with three or more candidates, coordination among like-minded voters is an important problem. We analyze the trade-off between coordination and learning about candidate quality under different temporal election systems in the context of the U.S. presidential primary system. In our model, candidates with different policy positions and qualities compete for the nomination, and voters...
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