英文标题：
《Emergent inequality and endogenous dynamics in a simple behavioral
  macroeconomic model》
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作者：
Yuki M. Asano, Jakob J. Kolb, Jobst Heitzig and J. Doyne Farmer
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最新提交年份：
2019
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英文摘要：
  Standard macroeconomic models assume that households are rational in the sense that they are perfect utility maximizers, and explain economic dynamics in terms of shocks that drive the economy away from the stead-state. Here we build on a standard macroeconomic model in which a single rational representative household makes a savings decision of how much to consume or invest. In our model households are myopic boundedly rational heterogeneous agents embedded in a social network. From time to time each household updates its savings rate by copying the savings rate of its neighbor with the highest consumption. If the updating time is short, the economy is stuck in a poverty trap, but for longer updating times economic output approaches its optimal value, and we observe a critical transition to an economy with irregular endogenous oscillations in economic output, resembling a business cycle. In this regime households divide into two groups: Poor households with low savings rates and rich households with high savings rates. Thus inequality and economic dynamics both occur spontaneously as a consequence of imperfect household decision making. Our work here supports an alternative program of research that substitutes utility maximization for behaviorally grounded decision making.
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中文摘要：
标准的宏观经济模型假设家庭是理性的，因为他们是完美的效用最大化者，并用推动经济远离稳定状态的冲击来解释经济动态。在这里，我们建立在一个标准的宏观经济模型之上，在这个模型中，一个理性的代表性家庭可以决定消费或投资多少。在我们的模型中，家庭是嵌入在社会网络中的近视、有界理性的异质主体。每家每户不时通过复制其消费最高的邻居的储蓄率来更新其储蓄率。如果更新时间很短，经济就会陷入贫困陷阱，但更新时间越长，经济产出就会接近其最佳值，我们观察到一个向经济产出不规则内生波动的经济的关键过渡，类似于商业周期。在这种制度下，家庭分为两类：储蓄率低的贫困家庭和储蓄率高的富裕家庭。因此，不平等和经济动态都是由于家庭决策不完善而自发发生的。我们在这里的工作支持另一种研究方案，用效用最大化代替基于行为的决策。
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分类信息：

一级分类：Economics        经济学
二级分类：General Economics        一般经济学
分类描述：General methodological, applied, and empirical contributions to economics.
对经济学的一般方法、应用和经验贡献。
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一级分类：Quantitative Finance        数量金融学
二级分类：Economics        经济学
分类描述：q-fin.EC is an alias for econ.GN. Economics, including micro and macro economics, international economics, theory of the firm, labor economics, and other economic topics outside finance
q-fin.ec是econ.gn的别名。经济学，包括微观和宏观经济学、国际经济学、企业理论、劳动经济学和其他金融以外的经济专题
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