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Working Paper
Money, liquidity and welfare
Wen, Yi (2014-02-07)
This paper develops an analytically tractable Bewley model of money demand to shed light on some important questions in monetary theory, such as the welfare cost of inflation. It is shown that when money is a vital form of liquidity to meet uncertain consumption needs, the welfare costs of inflation can be extremely large. With log utility and parameter values that best match both the aggregate money demand curve suggested by Lucas (2000) and the variance of household consumption, agents in our model are willing to reduce consumption by 3% ~ 4% to avoid 10% annual inflation. The astonishingly ...
Working Papers , Paper 2014-3

Working Paper
Understanding the large negative impact of oil shocks
Aguiar-Conraria, Luis; Wen, Yi (2006)
This paper offers a plausible explanation for the close link between oil prices and aggregate macroeconomic performance in the 1970s. Although this link has been well documented in the empirical literature, standard economic models are not able to replicate this link when actual oil prices are used to simulate the models. In particular, standard models cannot explain the depth of the recession in 1974-75 and the strong revival in 1976-78 based on the oil price movements in that period. This paper argues that a missing multiplier-accelerator mechanism from standard models may hold the key.
Working Papers , Paper 2005-042

Working Paper
Can rising housing prices explain China’s high household saving rate?
Wen, Yi; Wang, Xin (2010)
China?s average household saving rate is one of the highest in the world. One popular view attributes the high saving rate to fast rising housing prices and other costs of living in China. This article uses simple economic logic to show that rising housing prices and living costs per se cannot explain China?s high household saving rate. Although borrowing constraints and demographic changes can help translate housing prices to the aggregate saving rate, quantitative simulations using Chinese data on household income, housing prices, and demographics indicate that rising mortgage costs ...
Working Papers , Paper 2010-048

Working Paper
Resuscitating the credit cycle
Pintus, Patrick A.; Wen, Yi (2008)
This paper resuscitates the credit-cycle theory of Kiyotaki and Moore (1997) in a two-agent RBC model with conventional preferences and standard neoclassical technologies. It is shown that small transitory shocks to credit demand (or supply) can generate large, highly persistent, dampened cycles in aggregate output. Key to our results is the interaction between credit constraints and habit formation. Credit constraints based on collateralized assets mainly amplify the impact of shocks while habit formation in consumption demand mainly propagates it. Hump-shaped boom-bust cycles do not arise ...
Working Papers , Paper 2008-014

Working Paper
Imperfect competition and indeterminacy of aggregate output
Wen, Yi; Wang, Pengfei (2007)
This paper shows imperfect competition can lead to indeterminacy in aggregate output in a standard DSGE model with imperfect competition. Indeterminacy arises in the model from the composition of aggregate output. In sharp contrast to the indeterminacy literature pioneered by Benhabib and Farmer [3] and Gali [19], indeterminacy in our model is global; hence it is more robust to structural parameters. In addition, sunspots in our model can be autocorrelated. The paper provides a justification for exogenous variations in desired markups, which play an important role as a source of cost-push ...
Working Papers , Paper 2006-017

Working Paper
Optimal Dynamic Tax-Transfer Policies in Heterogeneous-Agents Economies
Chien, YiLi; Wen, Yi (2023-05-01)
In the design of an optimal tax-transfer system, there are two complementary conventional wisdoms: the labor-efficiency argument and the debt-efficiency argument. The former emphasizes the trade-off between redistribution and distortions in the labor market, while the latter emphasizes the trade-off between gains from monopoly rents and distortions in the asset market. We use an analytically tractable infinite-horizon model with both ex-ante and ex-post heterogeneity to show that neither argument is complete in the design of the tax-transfer system. Instead, in Aiyagari-type models the ...
Working Papers , Paper 2023-009

Journal Article
The quantity theory of money
Wen, Yi (2006-11)
Monetary Trends , Issue Nov

Working Paper
Wavelet: a new tool for business cycle analysis
Zeng, Bing; Wen, Yi; Raihan, Sharif Md. (2005)
One basic problem in business-cycle studies is how to deal with nonstationary time series. The market economy is an evolutionary system. Economic time series therefore contain stochastic components that are necessarily time dependent. Traditional methods of business cycle analysis, such as the correlation analysis and the spectral analysis, cannot capture such historical information because they do not take the time-varying characteristics of the business cycles into consideration. In this paper, we introduce and apply a new technique to the studies of the business cycle: the wavelet-based ...
Working Papers , Paper 2005-050

Working Paper
The effectiveness of monetary policy: an assessment
Wen, Yi (2005)
When monetary policies are endogenous, the conventional VAR approach for detecting the effect of monetary policies is powerless. This paper proposes to test the implication of monetary policies along a different dimension. That implication is to exploit the policy induced exogeneity of endogenous variables that are the source of monetary non-neutrality. We illustrate the idea by constructing a new Keynesian sticky wage model with capital accumulation and then testing the implications of optimal monetary policies for nominal wages under both complete and incomplete information. Econometric ...
Working Papers , Paper 2005-052

Working Paper
What Does Financial Crisis Tell Us About Exporter Behavior and Credit Reallocation?
Jiao, Yang; Wen, Yi (2019-09-24)
Using Japanese firm data covering the Japanese financial crisis in the early 1990s, we find that exporters' domestic sales declined more significantly than their foreign sales, which in turn declined more significantly than non-exporters' sales. This stylized fact provides a new litmus test for different theories proposed in the literature to explain a trade collapse associated with a financial crisis. In this paper we embed the Melitz's (2003) model into a tractable DSGE framework with incomplete financial markets and endogenous credit allocation to explain both the Japanese firm-level data ...
Working Papers , Paper 2019-23

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