Productivity and technical change: Measurement and testing

This paper considers two specifications, namely, the time trend (TT) and general index (GI) of technical change. These models are extended to accommodate the TFP growth accounting relationship in to the econometric model. We also propose a formal test to determine whether the TT or the GI model is appropriate for the data. I would like to thank Badi Baltagi for his comments and Peter Schmidt for suggesting the test proposed in the paper. None, other than me, is responsible for any remaining errors.     

Luenberger and Malmquist Productivity Indices: Theoretical Comparisons and Empirical Illustration

This contribution establishes, from a theoretical viewpoint, the relations between the Malmquist productivity indices, that measure in either input or output orientations, and the Luenberger productivity indices, that can simultaneously contract inputs and expand outputs, but that can also measure in either input or output orientations. The main result is that a Malmquist productivity index overestimates productivity changes, since it provides productivity measures that are nearly twice those given by the Luenberger productivity index looking for simultaneous contractions of inputs and expansions of outputs. This relationship is empirically illustrated using data from 20 OECD countries over the 1974–97 period.     

江西省总量生产函数与全要素生产率估算:1952-2007

根据索洛余值法和C-D生产函数,建立了江西省总量生产函数模型,并利用江西省1952-2007年相关指标数据进行了测算。研究发现,江西省总量生产函数是一个规模报酬递减的生产函数,江西省经济增长模式为投资驱动型的粗放型经济增长模式,代表技术进步的全要素生产率对江西省经济增长的贡献率长期在20%左右。因此,要提高江西省的全要素生产率贡献率,必须把技术进步放在江西经济社会发展的优先战略地位。     

A Cross-Country Empirical Investigation of the Aggregate Production Function Specification

Many growth models assume that aggregate output is generated by a Cobb-Douglas production function. In this article we question the empirical relevance of this specification. We use a panel of 82 countries over a 28-year period to estimate a general constant-elasticity-of-substitution (CES) production function specification. We find that for the entire sample of countries we can reject the Cobb-Douglas specification. When we divide our sample of countries up into several subsamples, we find that physical capital and human capital adjusted labor are more substitutable in the richest group of countries and are less substitutable in the poorest group of countries than would be implied by a Cobb-Douglas specification.     

我国商业银行规模经济评价方法研究

现有的关于银行规模经济评价的理论,要么基于参数法,要么专注于非参数法,很少有将二者兼顾考虑的评价方法.本文在充分考虑参数法和非参数法利弊的基础上,针对我国商业银行的特点提出了分类规模经济评价的思想.同时在利用DEA方法获得生产可能性集前沿面的基础上,建立了通过拟合生产函数获得各种规模经济评价指标的方法.     

The three Is of public schools: irrelevant inputs,insufficient resources and inefficiency

We examine the educational production function and efficiency of public school districts in Illinois. Using non-parametric kernel methods, we find that most traditional schooling inputs are irrelevant in determining test scores (even in a very general setting). Property tax caps are the only relevant factor that is related to districts’ financial constraints and have predominantly negative associations with test scores. Therefore, insufficient resources may be partially responsible for the lack of growth in test scores. For most other relevant inputs, we find substantial heterogeneity in the returns, which helps reconcile some of the puzzling results in the literature. We further find that there exist inefficiencies in school districts. Moreover, the level of test scores, commonly used as a measure of school effectiveness, (while related) differs substantially from our efficiency scores, and standard parametric approaches drastically underestimate school efficiency. We discuss the policy implications of our results.     

Linking Knowledge to Productivity: A Germany-Italy Comparison Using the CIS Database

This paper employs micro-aggregated data from the FirstCommunity Innovation Survey for assessing the contribution of the level and type of R & D spending, the purchase of new machinerywith embodied technological change, economies of scale, and information sharing with client and suppliers to productivity(total sales per employee) in German and Italian firms in 20 manufacturing industries. The regression analysis confirms theresults of previous studies that R & D and technological change embodied in new machinery and capital equipment aremajor factors affecting productivity at the firm level. However, the elasticity of productivity to both R & D and embodiedtechnological change is higher in Germany than in Italy. Conversely, information sharing with clients and suppliersrelated to innovation projects does not result in higher productivity, with the exception of a few industries (inparticular those producing traditional consumer goods) in Germany.     

Human Capital,Technology, and Specialization: A Comparison of Developed and Developing Countries

GDP GDP function framework, and apply it to panel data. We find that factor supplies and openness to trade are important factors influencing the structure of production, but we also uncover interesting differences in results across output sectors and groups of countries. In addition, we find evidence that Hicks-neutral technological differences do not affect specialization. Finally, our results on the effect of openness highlight the sources of conflicts between developed and developing countries in multilateral trade negotiations. Received April 18, 2000; revised version received January 8, 2001     

Valuation of Urban Air Pollution: A Case Study of Kanpur City in India

This study estimates the monetary benefits to individuals from health damages avoided if air pollution is reduced in the urban industrial city of Kanpur in India. A notable feature of this study is that it uses data from weekly health-diaries collected for three seasons. For measuring monetary benefits, the study considers two major components of health cost that is incurred due to adverse effects of air pollution on health i.e., the loss in wages due to workdays lost from work and the expenditure incurred on mitigating activities. The study estimates that a representative working individual from Kanpur would gain Rs. 165.47 per year if air pollution were reduced to a safe level. The extrapolated annual benefits for the entire population in the city are Rs. 224.55 million.