Essays on Time Inconsistent Policy

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Issue Date
2016-12-31Author
Yu, Sijun
Publisher
University of Kansas
Format
108 pages
Type
Dissertation
Degree Level
Ph.D.
Discipline
Economics
Rights
Copyright held by the author.
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Show full item recordAbstract
This research is mainly focused on the time-inconsistency during policy making process. It contains three chapters as follows: Chapter One is to research into the time-inconsistency problem in policy making with extensive form games. The paper divides the game into four scenarios: one-stage independent game, one-stage forecasting game, finite stage forecasting game and infinite period game. The first two games show that neither government nor public want to be type 1 and government always has an incentive to deviate from announced policy. The last two games are mainly focused on the possibilities that both players want to randomize their strategies. The games are able to conclude that players only randomize under certain conditions. Chapter Two is to prove the existence of time-inconsistent monetary policy in the U.S. empirically by applying both non-parametric method and rolling estimation for time varying analyses along with the asymmetric policy preference model, this paper proposes that with almost every recession since 1960, the rolling method reaches a break point shortly before or right at the recession date and that the non-parametric method reaches a peak for every recession that is not caused by supply shock. In addition, this paper uses the chain-weighted PCE index to conclude that there exists time-inconsistent policy preference over different recession periods, and also to compare results with the chain-weighted GDP index. The study discovers that the PCE index in general will result higher targeted inflation rate than the GDP index, and policy preferences are different during pre- and post-recessions with both indexes. Chapter Three is extending the empirical analysis to different countries by studying the policy preferences of pre- and post-recession periods. Most countries depict their policy preferences as time-inconsistent. Moreover, by adjusting the non-stationarity problem in the data during the first-stage regression, the paper is able to capture the differences between both analyses. The study concludes that only Italy, Netherlands and Canada are not affected by non-stationarity problem that much and both analyses can reach a general consistent results; whereas the rest countries are greatly affected by the non-stationarity problem, especially the US and UK.
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