Hans Singer's debts to Schumpeter and Keynes

This essay discusses Hans Singer's intellectual formation andthe influences on his early writings and on his post-1947 developmenteconomics. It asks what impact the unusual experience of studyingwith both Schumpeter and Keynes had upon his subsequent economicthinking and practice. It argues that the influence of boththese mentors was surprisingly small, compared with that ofSpiethoff and Clark. Singer repaid his debts to Schumpeter andKeynes, but by working in the new currency of development economics,some of which was his own coinage. His motivation for this vasteffort was derived from the social egalitarianism of figuressuch as William Beveridge, Archbishop Temple and R. H. Tawney,rather than the liberalism of Schumpeter and Keynes.     

Permanent and transitory components of recessions

We propose a generalization of existing empirical business cycle models that allows us to decompose recessions into permanent and transitory components. We find that the transitory component of recessions accounts for between 77% and 96% of the observed variance of monthly indicator series. Our results suggest the following three-phase characterization of the business cycle: recession, high-growth recovery during which output partially reverts to its previous peak, and normal growth following the recovery. In addition, we find significant timing differences between the permanent and transitory components of recessions; most notably the lack of the usual high-growth recovery phase following the 1990–91 recession. Final version April 5, 2001     

Re-employment probabilities over the business cycle

Using a Cox proportional hazard model that allows for a flexible time dependence in order to incorporate business cycle effects, we analyze the determinants of re-employment probabilities of young workers in the USA from 1978–1989. We find considerable changes in the chances of young workers finding jobs over the business cycle despite the fact that personal characteristics of those starting jobless spells do not vary much over time. Therefore, government programs that target specific demographic groups may change individuals’ positions within the queue of job seekers, but may only have a more limited impact on average re-employment probabilities. Living in an area with high local unemployment reduces re-employment chances as does being in a long spell of non-employment. However, the damage associated with being in a long spell seems to be reduced somewhat if a worker is unemployed in an area with high overall unemployment.

Good skills in bad times: Cyclical skill mismatch and the long-term effects of graduating in a recession

We show that cyclical skill mismatch, defined as mismatch between the skills supplied by college graduates and skills demanded by hiring industries, is an important mechanism behind persistent career loss from graduating in recessions. Using Norwegian data, we find a strong countercyclical pattern of skill mismatch among college graduates. Initial labor market conditions have a declining but persistent effect on match quality and skill mismatch early in their careers. Match quality of the first employment may explain up to half of the short-term and most of the long-term earnings loss from graduating in a recession.     

Worker flows, job flows and unemployment in a matching model

Standard matching models of unemployment generate far too little volatility in unemployment and vacancies relative to the variation in the shock variables. Shimer (2005) showed that in US data the vacancy-to-unemployment ratio is about 26 times more volatile than the standard model predicts. He identified the flexibility of wages as the key issue and triggered a heated debate on possible improvements of the core model to accommodate these empirical facts. In this paper, we first document Shimer's facts for the UK and find them to be qualitatively similar to US facts. We then develop and calibrate a model based on the Mortensen and Pissarides approach that increases the volatility of the v/u ratio 20-fold compared to the standard framework. The key features of our model relate to the job creation decision by firms and the search options of workers. We allow these to search whilst employed, and firms to re-advertise jobs that have been quit from. This leads us to use a different job creation process, whereby potential vacancies, or job ‘ideas’, arise at a finite rate per period over a range of idiosyncratic productivities. Calibrating the model to UK data, we show that it delivers volatility in unemployment and vacancies much closer to, though still not as large as, that observed for the UK, whilst retaining the standard wage determination process.     

The long-run Phillips curve and non-stationary inflation

Modern theories of inflation incorporate a vertical long-run Phillips curve and are usually estimated using techniques that ignore the non-stationary behaviour of inflation. Consequently, the estimates obtained are imprecise and unable to test the veracity of a vertical long-run Phillips curve. We estimate a Phillips curve model taking into account the non-stationary properties in inflation and identify a small but significant positive relationship between inflation and unemployment. The results also provide some evidence that the trade-off between inflation and the rate of unemployment in the short-run worsens as the mean rate of inflation increases.     

Cyclical Asymmetries in Unemployment Rates: International Evidence

This paper investigates to what extent the observed nonlinearities in the unemployment rates of six major developed economies are the response to cyclical asymmetries. Two classes of models are compared: strict smooth transition autoregressions and models where the transition variable is GDP growth, which is considered a more direct indicator of the business cycle. The empirical evidence points out that nonlinearities in unemployment rates are induced by cyclical asymmetries. It is also found that in most countries the unemployment rate looks stationary and reverts to a long-run equilibrium rate in periods of normal growth, while in extreme cyclical situations it tends to become nonstationary as if each extreme cyclical episode had its own path of equilibrium.      

Business cycles in EU new member states: How and why are they different?

This paper uses the business cycle accounting framework to investigate the differences between economic fluctuations in Central and Eastern European (CEE) countries and the euro area. We decompose output movements into the contributions of four economic wedges, affecting the production technology, the agents’ intra- and intertemporal choices, and the aggregate resource constraint. We next analyze the observed cross-country differences in business cycles with respect to these four identified wedges. Our results indicate that business cycles in the CEE countries do differ from those observed in the euro area, even though substantial convergence has been achieved after the eastern EU enlargement. The major differences concern the importance of the intra- and intertemporal wedges, which account for a larger proportion of output fluctuations in the CEE region and also exhibit relatively little comovement with their euro area counterparts.     

A note on the competitive search model of Azariadis and Pissarides

In this short note, I reinvestigate a recent paper of Azariadis and Pissarides (Unemployment dynamics with international capital mobility, European Economic Review, 2007(51), 27–48) where wages are determined in a competitive search setting. I show that their equation on the equilibrium wage rate is incorrect. I derive a correct wage equation and perform the numerical analysis. The correction does not change their result and high capital mobility still raises the variability of the unemployment rate.     

Optimal fiscal policy in the neoclassical growth model revisited

This paper studies optimal taxation in a version of the neoclassical growth model in which investment becomes productive within the period, thereby making the supply of capital elastic in the short run. Because taxing capital is distortionary in the short run, the government׳s ability/desire to raise revenues through capital income taxation in the initial period or when the economy is hit with a bad shock is greatly curtailed. Our timing assumption also leads to a tractable Ramsey problem without state-contingent debt, which can give rise to debt-financed budget deficits during recessions.     

当前我国经济运行的周期性波动特征

目前我国经济运行正处于存货投资短周期波动的扩张期、固定资产投资增长短周期和中周期波动的扩张期、产业结构升级中周期波动的衰退期和中长周期波动的复苏期。与这一系列经济活动的周期性变化特征相对应 ,我国GDP增长正处于短周期波动的扩张期、中周期波动的复苏期和中长周期波动的谷底。我国经济已进入了新一轮的快速增长期 ,而且短期内不会出现大幅度波动现象 ,政府仍应采取中性宏观经济政策。     

Economic growth and the employer of last resort: A simple model of flexicurity capitalism

This paper presents a model of economic growth with unemployment due to labor market rigidities. The economy consists of a firm that maximizes profits, of a government and of two types of households that maximize inter-temporal utility. One household supplies skilled labor at the first labor market, the other household supplies simple labor at the second labor market. The government in the economy raises taxes and uses its revenues to employ labor receiving unemployment benefits, to finance transfers to the household in the second labor market and to finance public spending. We analyze both the version with exogenous growth as well as an endogenous growth variant, where growth is made endogenous by assuming positive externalities of capital. The exogenous growth model is characterized by global determinacy while it is locally indeterminate. The endogenous growth model can be globally indeterminate with the high balanced growth path being locally indeterminate and the low balanced growth path being locally determinate. We also study how taxation and how the speed of the wage adjustment affect the economy.     

A sneeze in the U.S., a cough in Japan,but pneumonia in Taiwan? An application of the Markov-Switching vector autoregressive model

This paper examines the lead–lag relationships among the output of Taiwan, Japan and the U.S. Three testing methods are employed: the traditional linear Granger causality test, Hiemstra and Jones' [Hiemstra, C., Jones, J.D., 1994. Testing for linear and nonlinear Granger causality in the stock price-volume relation. Journal of Finance 49, 1639–1664] nonlinear Granger causality test and Warne's [Warne, A., 2000. Causality and regime inference in a Markov-S switching VAR, Working Paper no. 118, Sveriges Riksbank, Stockholm.] Granger causality test under the Markov-Switching model. We find that the causal ordering is unclear and depends on the model we used. Because Markov-Switching model imposes few restrictions in estimation, we tend to use its estimated results but bear in mind that the evidence is sensitive. First, the common shock hypothesis is found that most probably exists between Taiwan and the U.S. Next, we conclude that Japan tends to lead Taiwan's output, to a certain extent. Last, there is no causal ordering between the U.S. and Japan economies.     

Managing TFT-LCDs under uncertainty: When crystal cycles meet business cycles

Understanding the correlation between the crystal cycle and the business cycle is important, because it can help managers to anticipate change, reduce environmental uncertainty, and formulate operational objectives. To this end, we focused on China and the U.S. in our analysis. We found that the economic indicators that were the most relevant in the characterization of China's huge and burgeoning TFT-LCD market are gross domestic production and industrial production. We complemented this finding by conducting similar analyses in the U.S. market using a more comprehensive list of economic indicators.     

解读马克思与熊彼特的"二分法悖论"

理论界流行着关于马克思与熊彼特的"二分法悖论",马克思认为"资本主义制度最终不能继续生存是因为其经济失败",而熊彼特则认为"资本主义制度最终被摧毁是因为其创新而取得的经济成功".本文旨在通过比较马克思与熊彼特的经济发展的思想后,探讨了这两位经济学家得出截然不同的结论的原因.     

Ability Matters: Effects of Youth Labor‐Market Opportunities on Long‐Term Labor‐Market Outcomes

Utilizing registry data from cognitive ability tests for all Norwegian males born between 1962 and 1973, I study whether labor‐market conditions at the age of graduation have differential effects on earnings and employment for different ability groups. I find that low‐ability males are more vulnerable to local business cycles at the expected time of labor‐market entry. In particular, I demonstrate that low‐ability males suffer larger long‐term earnings losses than the rest of the population.     

Seasonality and Markov switching in an unobserved component time series model

It is generally acknowledged that the growth rate of output, the seasonal pattern, and the business cycle are best estimated simultaneously. To achieve this, we develop an unobserved component time series model for seasonally unadjusted US GDP. Our model incorporates a Markov switching regime to produce periods of expansion and recession, both of which are characterized by different underlying growth rates. Although both growth rates are time-varying, they are assumed to be cointegrated. The analysis is Bayesian, which fully accounts for all sources of uncertainty. Comparison with results from a similar model for seasonally adjusted data indicates that the seasonal adjustment of the data significantly alters several aspects of the full model. First Version Received: January 2001/Final Version Received: February 2002 Send offprint requests to: Rob Luginbuhl?Correspondence to: Rob Luginbuhl     

Self-employment and the Okun's law

This research establishes a significant relationship between the share of self-employment in total employment and the Okun's coefficient, which had been insufficiently addressed in the literature. We provide evidence on the determinants driving the differences in the unemployment–output relationship in Spanish regions and conclude that the differences in the share of self-employment in total employment prove relevant when accounting for differences in Okun's law, and its effect is greater than that of labour productivity per worker, which had been considered the main factor for regional discrepancies. The economic policy implications of this outcome are valuable for two reasons: European authorities are promoting self-employment and the emergence of the ‘gig economy’. This finding also opens a notable line of research: assessing whether this empirical regularity is observable in other economies.     

The short and long-run interdependencies between the Eurozone and the USA

We estimate quarterly cointegrating vector autoregressive models for the Eurozone and the USA based on long-run restrictions derived from a dynamic open economy model. Three long-run relations between the Eurozone and the USA emerge: relative purchasing power parity, international interest parity and a stationary output gap between the two economies. Generalized impulse response functions show differences in the dynamic adjustment of the two economies. Due to the I(1)-characteristic of both output series and the stability conditions imposed by the long-run equilibrium relationships, shocks to the model produce level effects only, while growth rates converge to their long-run averages.

高级技术工人胜任能力模型与激励机制研究

高级技术工人短缺业已成为我国经济发展的严重桎梏，其中激励不足是造成该问题的重要原因。针对目前我国高级技术工人激励制度中存在的问题，可运用理论假设与实证分析相结合的研究方法构建我国高级技术工人的胜任能力模型，并探讨胜任能力模型与激励因素之间的内在联系，以利于建立基于胜任力模型的高级技术工人薪酬激励和精神激励机制。