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首页> 外文期刊>Journal of Economic Dynamics and Control >Good luck or good policy? An expectational theory of macro volatility switches
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Good luck or good policy? An expectational theory of macro volatility switches

机译:好运还是好政策?宏观波动率切换的期望理论

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摘要

In an otherwise unique-equilibrium model, agents are segmented into a few informational islands according to the signal they receive about others' expectations. Even if agents perfectly observe fundamentals, rational-exuberance equilibria (REX) can arise as they put weight on expectational signals to refine their forecasts. Constant-gain adaptive learning can trigger jumps between the equilibrium where only fundamentals are weighted and a REX. This determines regime switching in macro volatility despite unchanged monetary policy and time-invariant distribution of exogenous shocks. In this context, a tight inflation-targeting policy can lower expectational complementarity preventing rational exuberance, although its effect is non-monotone.
机译:在另一个独特的平衡模型中,根据代理商收到的有关他人期望的信号将代理商分成几个信息孤岛。即使代理商完全遵守基本面,当他们对预期信号进行加权以完善其预测时,也会出现理性繁荣均衡(REX)。恒定增益自适应学习可以触发仅加权基本面的平衡与REX之间的跳跃。尽管货币政策保持不变,外来冲击的时间不变,这仍决定了宏观波动中的政权转换。在这种情况下,严格的通胀目标政策可以降低期望的互补性,从而防止理性繁荣,尽管其效果是非单调的。

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