货币政策的时间不一致性、可信性与透明度

货币政策的时间不一致性导致了政策的可信性问题,这已为实践所证明。本文提出,货币政策透明度以其声誉效应为基础,对时问不一致性形成双重约束：正向约束与逆向约束,正向约束,是限制中央银行的通货膨胀倾向;而逆向约束,是克服中央银行在反时间不一致性中的过度保守倾向。     

Inflation targeting credibility and sovereign risk: evidence from Colombia

This article relates to the literature on sovereign risk in developing countries. In particular, we present empirical evidence to address the effect of inflation targeting credibility on sovereign risk based on the Colombian experience. The findings denote that credibility is an important improvement in the institutional framework to reduce the sovereign risk premium.     

Pricing Discretion and Price Regulation in Competitive Industries

Price capped firms enjoy a large degree of pricing discretion, which may harm customers and competition. We study two alternative regulatory regimes to limit it: the first regime (Absolute) places a fixed upper limit to the prices charged in captive markets, while the other regime (Relative) constrains the captive prices relatively to the competitive ones. Under the Relative regime, captive prices are only weakly lower and competitive prices are always higher than under the Absolute regime. However, the number of competitors and/or their output may be higher under the Relative regime. While the effects on aggregate welfare are ambiguous, there is some evidence that the Relative regime is more likely to increase consumers’ surplus and social welfare the more efficient are the competitors.     

A Note on Inflation Targeting

The authors present a pedagogical graphical exposition to illustrate the stabilizing effect of price target zones. Based on a textbook AD-AS apparatus, they find that authorities' commitment to defend a price target zone will affect the public's inflation expectations and, in turn, reduce actual inflation. They also find that, when the economy experiences supply shocks, the announcement that the monetary authorities intend to defend a price target zone will reduce the variability of domestic prices but raise the variability of domestic output relative to a free-price regime. However, when the economy experiences demand shocks, a price target zone tends to lower the variability of both domestic prices and out-put relative to a free-price regime.     

通货膨胀目标制的模式及作用机制浅探

通货膨胀目标制是20世纪90年代兴起的一种新的货币政策框架,目前已经在不同地区、不同类型的国家中得到了广泛的应用,并取得良好的效果。通货膨胀这一经济现象是无法完全消灭的,而其失控会不可避免的对经济各方面造成不良的影响。通胀目标制不同于其他货币制度之处就在于它是在通货膨胀失控之前就采取有效措施来预防,而不是每次都等到损害已经造成后再补救。因此,对通货膨胀目标制的定义、模式、作用机制及政策效果进行分析就很有必要,它为中国的货币政策改革提供了一种选择。     

Inflation targeting and inflation expectations in Mexico

In this article we analyse inflation expectations in Mexico. After a review of the theoretical and empirical literature, we apply unit root, normality and cointegration tests to the data provided by Banco de México (Banxico) in the Survey on the Expectations of the Private Sector Economics Specialists. Our results reject the null hypothesis of normality for inflation expectations over the period 2004:01–2011:12. The exchange rate has become one of the most relevant variables in the transmission mechanism of monetary policy in a small open economy. In this regard, we show the existence of a long-run relationship between nominal exchange rate and interest rate where inflation expectations matter for long-term dynamics.     

Comparing Different Central Bank Targets

In this paper we analyze different target regimes for a central bank. First, we determine the main macroeconomic variables under inflationtargeting and nominal income targeting in the context of a Mundell–Flemmingtwo country model. We then investigate under which conditions onetarget regime is superior to another if supply or demand shocks occur.The main result of this paper is that there exists a unique boundary for theweight on employment in the objective function of the centralbank. If the actual weight is smaller than this bound, inflation targetingis superior to nominal income targeting. For a weight larger than thisbound, nominal income targeting causes a smaller loss. For the two extremecases of the weight, namely zero or infinity one target regime coincideswith the loss-minimizing solution: inflation targeting for a weight of zeroand nominal income targeting for a weight of infinity.     

通货膨胀问题国外研究进展与评述

20世纪70年代以来通货膨胀的频发,成为严重困扰世界各国经济运行的主要难题之一,引发了众多国外学者对通货膨胀的广泛关注以及从宏观层面到微观基础层面的深入研究。本文主要从通货膨胀的福利成本、通货膨胀的不确定性、持续性和通货膨胀目标制四个方面入手,着重回顾与评论20世纪90年代尤其是21世纪以来的国外学者研究通货膨胀问题的成果,以期在把握通货膨胀问题研究的进展中,总结治理经验与合理借鉴应对政策。     

The reaction of disagreements in inflation expectations to fiscal sentiment obtained from information in official communiqués

Using official communiqués about fiscal policy, we develop a fiscal sentiment indicator, and we verify the reaction of disagreements in inflation expectations to fiscal sentiment. This analysis is relevant to inflation targeting (IT) countries because transparency and communication can influence expectations. The results suggest that a more optimistic fiscal sentiment reduces disagreements in inflation expectations. Estimates show that, for higher disagreements in inflation expectations at 12-month maturity, an optimistic fiscal sentiment can reduce the disagreement more sharply. In turn, the fiscal sentiment effect on the disagreement for the 48-month maturity is stronger the smaller the disagreement is. The results allow us to outline the following policy recommendations. First, an optimistic fiscal environment is important in the task of guiding inflation expectations and reducing inflation uncertainty. Second, fiscal communication is an important tool for the expectations formation process, and therefore it must be carefully managed to help in the task of forward guidance of inflation expectations, being important for the IT regime. Third, both fiscal credibility and monetary policy credibility are important for the expectations formation process, particularly for the reduction of inflation uncertainty, representing aspects that must be preserved in countries that adopt the IT regime.     

中央银行独立性、责任性与通货膨胀目标制

近年来不少学者提出,我国货币政策应转向通货膨胀目标制。我国现行的政策实际上正是一种隐性的通货膨胀目标制,20世纪90年代以来所发生的几次通货膨胀偏倚很大程度上是由于央行的独立性不够。鉴于通货膨胀目标制并不能解决当前我国货币政策调控中的问题并可能带来更多的问题,今后货币政策改革应坚持由直接调控向间接调控、由数量型调控向价格型调控的转变思路,在提高央行独立性的同时,增强其责任性并提高货币政策的透明度。     

政策可信性变动对菲利普斯曲线稳定性的影响——来自中国的经验证据

文章以1994年前后的价格冲击下人民银行将适应性政策转变为非适应性政策这一事件为背景,考察了公众对政策可信性的变动及其对通胀预期形成方式和菲利普斯曲线稳定性的影响。我们首先在理性预期假定下设定引入政策可信性变量的菲利普斯曲线模型。通过对"产出-物价"曲线的判断,SVAR模型中通胀冲击下通胀和产出缺口的响应函数以及菲利普斯曲线模型的递归最小二乘法检验,得出我国公众对政策的可信性增加,进而导致其通胀预期形成方式中的前向参照政策信息的成分增加,菲利普斯曲线发生改变。这就意味着,如果人民银行试图维持通胀预期形成方式和菲利普斯曲线的稳定,就应该保证政策可信性具有稳定性,而且,从长期实现价格稳定目标的角度来看,人民银行还应不断提高这一政策的可信性。