Active intermediation in a monetary overlapping generations economy

This paper establishes that the profit-seeking activities of private intermediaries can ensure Pareto efficiency in the standard pure-exchange monetary overlapping generations economy without the need for government monetary or fiscal policy intervention. Moreover, these profit-seeking activities are shown to rule out all aperiodic and k-periodic cycles for k greater than 2. Contrary to much recent work on intermediation, the profit opportunities that arise for intermediaries in this context are not due to assumed frictions or asymmetric information. Rather, they are due to the dynamic open-ended structure of the economy, which permits debt roll-over.     

Replica core equivalence theorem: An extension of the Debreu–Scarf limit theorem to double infinity monetary economies

An overlapping generations model with the double infinity of commodities and agents is the most fundamental framework to introduce outside money into a static economic model. In this model, competitive equilibria may not necessarily be Pareto-optimal. Although Samuelson (1958) emphasized the role of fiat money as a certain kind of social contract, we cannot characterize it as a cooperative game-theoretic solution like the core. In this paper, we obtained a finite replica core characterization of Walrasian equilibrium allocations under non-negative wealth transfer and a core-limit characterization of Samuelson’s social contrivance of money. Preferences are not necessarily assumed to be ordered.     

MONETARY POLICY AND BEHAVIOURAL FINANCE

Abstract.  There have been major advances in both theory and econometric techniques in mainstream macro-models and parallel advances in knowledge of the monetary transmission mechanism acting via asset prices. At the same time, behavioural finance has provided evidence that not all actors in the economy are 'fully rational' and this has influenced models of asset pricing on which part of the monetary policy transmission mechanism depends. Such uncertainty about the behaviour of asset prices has in part stimulated a move towards 'robustness', as an important criterion for guiding monetary policy. We argue that although we have discovered much, including 'what not to do', nevertheless our knowledge of the transmission mechanism is very incomplete. This is because, in spite of all the theoretical advances that have been made, there is still considerable uncertainty over the behaviour of agents, which has been reinforced by insights from behavioural finance.     

Do banking shocks matter for the U.S. economy?

The quantitative significance of shocks to the financial intermediary (FI) has not received much attention up to now. We estimate a DSGE model with what we describe as chained credit contracts, using Bayesian technique. In the model, credit-constrained FIs intermediate funds from investors to credit-constrained entrepreneurs through two types of credit contract. We find that the shocks to the FIs' net worth play an important role in the investment dynamics, accounting for 17% of its variations. In particular, in the Great Recession, they are the key determinants of the investment declines, accounting for 36% of the variations.     

The role of financial intermediaries in monetary policy transmission

The recent financial crisis has stimulated theoretical and empirical research on the propagation mechanisms underlying business cycles, in particular on the role of financial frictions. Many issues concerning the interactions between banking and monetary policy forced policy makers to redefine economic policies, and motivated macroeconomists to focus on the implications of financial intermediation constraints for asset price fluctuations, the behavior of non-financial firms, households, governments and in turn for real macroeconomic performance. This paper surveys research on the role of financial intermediaries and financial frictions in the transmission of monetary policy and discusses how to design both the new banking regulatory and supervisory structures and monetary policy in order to stabilize the economy. It also serves as an introduction to this special issue.     

Cyclical equilibria in multi-sector productive economies: The role of substitution and factor intensity

The paper examines the existence of cyclical perfect foresight equilibria in a two-sector overlapping generations economy with production in which both goods enter consumption. Conditions for the existence of two types of cyclical equilibra are obtained in terms of elasticities of substitution in production and consumption, factor shares in production, and expenditure shares in consumption. The role of substitution possibilities and factor intensities is highlighted. It is shown that factor intensity assumptions are not enough to rule out cyclical equilibria and that limit cycles may exist for substantial amounts of substitution possibilities in production; what matters is the relative sizes of the consumption and production elasticities. The results are illustrated using CES functions. A dynamical simulation of an economy which exhibits a Hopf cycle is presented.     

Does monetary policy influence banks’ risk weights under the internal ratings-based approach?

This paper studies the extent to which monetary policy may affect banks’ perception of credit risk and the way banks measure risk under the internal ratings-based approach. Specifically, we empirically analyze the effect of different monetary policy variables on banks’ risk weights for credit risk. We present robust evidence of a strong, statistically significant relationship between monetary policy easing and lower implicit risk weights of banks using the internal ratings-based approach. Further, we show that the recent prolonged period of accommodative monetary policy has been instrumental in establishing this relationship. The presented findings have important implications for the prudential authority, which should be aware of the possible side effects of monetary policy on how banks measure risk.     

Should the monetary policy rule be different in a financial crisis?

This article reviews the finding that standard loss functions in output and inflation are higher during discretionary periods than in periods during which monetary policy is described by a rule, such as the Taylor rule. It shows that the finding is consistent with earlier research, but argues that we really do not know if the Taylor rule would have improved performance during the recent financial crisis. The article then considers modifications of policy rules to deal with changes in interest rate spreads, credit aggregates and banks׳ balance sheets.     

Inflation targeting and monetary policy in Canada: What is the impact on inflation uncertainty?

Inflation uncertainty has been demonstrated both theoretically and empirically to lower real output. This paper examines the impact of inflation targeting in Canada on inflation uncertainty, as well as persistence. Our results indicate that inflation targeting lowered inflation persistence, but actually increased uncertainty. Such an effect may be due to the failure of the previous formal target, the M1 money supply, to successfully combat inflation.     

国房地产市场金融加速器效应的实证研究

中国房地产市场近年来一直处于非理性繁荣状态,因此,中央政府陆续出台一系列房地产调控政策旨在挤出房地产泡沫,平抑其投资过热现象,从而实现宏观经济在金融危机后的软着陆。此外,央行不断上调存款准备金率和基准利率更是加重了仍处在调控政策消化阶段的房地产市场的下行预期。根据金融加速器理论,初始的外部冲击通过信贷市场的放大作用,最终将引发大幅度的市场波动,破坏实体经济的正常运行。房地产企业的高负债率和开发模式决定了房地产市场中金融加速器效应十分显著,尤其是在政策变动和楼市供求关系发生逆转的情况下,表现更为明显。最后提出了相应的政策建议．