內生成長與通膨率目標政策： 封閉經濟的分析

Abstract

本文引用Zhang(1996)和Suen and Yip(2005)提出的貨幣具有降低交易成本的特性，建構封閉經濟體的貨幣內生成長模型，分別探討在投資有或沒有調整成本的情況下，政府採取釘住通貨膨脹目標政策對於經濟成長的影響，以及經濟體系的安定性。\n本文的結論可以歸納為：(1)當投資不具有調整成本時，政府調高目標通膨率會使得經濟成長率下降，且經濟體系呈現確定性；(2)當投資調整成本時，政府調高目標通膨率也會使得經濟成長率下降，但經濟體系卻呈現不確定性。

This thesis sets up a monetary endogenous growth model for a closed economy, in which monetary authorities implement a monetary policy of inflation rate targeting. The main feature of the model is that, in line with Zhang (1996) and Suen and Yip (2005), money plays a role to facilitate transactions of output, and hence holding money can lower the transaction cost. This thesis then uses the model to investigate whether the economy’s growth rate and the dynamic stability are closely related to the implementation of inflation rate targeting. \nTwo main findings emerge from the analysis. First, when investment does not involve adjustment costs, a rise in the inflation rate lowers the balanced economic growth rate and the equilibrium is characterized by local determinacy. Second, when investment involves adjustment costs, a rise in the inflation rate lowers the economic growth rate and the equilibrium is featured with local indeterminacy.