Offering a unifying theoretical perspective not readily available in any other text, this innovative guide to econometrics uses simple geometrical arguments to develop students' intuitive understanding of basic and advanced topics, emphasizing throughout the practical applications of modern theory and nonlinear techniques of estimation. One theme of the text is the use of artificial regressions for estimation, reference, and specification testing of nonlinear models, including diagnostic tests for parameter constancy, serial correlation, heteroscedasticity, and other types of mis-specification. Explaining how estimates can be obtained and tests can be carried out, the authors go beyond a mere algebraic description to one that can be easily translated into the commands of a standard econometric software package. Covering an unprecedented range of problems with a consistent emphasis on those that arise in applied work, this accessible and coherent guide to the most vital topics in econometrics today is indispensable for advanced students of econometrics and students of statistics interested in regression and related topics. It will also suit practising econometricians who want to update their skills. Flexibly designed to accommodate a variety of course levels, it offers both complete coverage of the basic material and separate chapters on areas of specialized interest.

Estimation and Inference in Econometrics

25. Multiple Imputation for Nonresponse in Surveys. By D. B. Rubin. ISBN 0 471 08705 X. Wiley, Chichester, 1987. 258 pp. £30.25.

Multiple Imputation for Nonresponse in Surveys

We investigate conditions sufficient for identification of average treatment effects using instrumental variables. First we show that the existence of valid instruments is not sufficient to identify any meaningful average treatment effect. We then establish that the combination of an instrument and a condition on the relation between the instrument and the participation status is sufficient for identification of a local average treatment effect for those who can be induced to change their participation status by changing the value of the instrument. Finally we derive the probability limit of the standard IV estimator under these conditions. It is seen to be a weighted average of local average treatment effects.

Evolution and Rationality Some Recent Game-Theoretic Results. Identification and Estimation of Local Average Treatment Effects

Economics Of Discrimination

This paper presents a framework for studying the concepts of fit and flexibility in the field of Strategic Human Resource Management (Strategic HRM) focusing on HRM practices, employee skills, and employee behaviors and reviews past conceptual and empirical work within that framework. A model of Strategic HRM is presented and this model is used to explore the concepts of fit and flexibility as they apply to Strategic HRM. The concepts of resource and coordination flexibility are applied to Strategic HRM, and the implications of the framework for both the practice of and research on Strategic HRM are discussed.

Toward a Unifying Framework for Exploring Fit and Flexibility in Strategic Human Resource Management

Employee participation and productivity

The empirical literature on productivity effects of continuing training is constantly increasing. However, the results on this subject differ widely. Explanations for this worrying diversity seem to lie in differences between countries, labor market institutions, and data generation on one hand, and in differences between the underlying estimation techniques on the other (Bartel, 2000). This paper concentrates on the latter problem and shows how results vary with different estimation techniques.

The Impact of Training Intensity on Establishment Productivity

This paper analyses the determinants of employment reactions of firms when environmental innovations have been carried out. It differentiates hereby between employment increases and decreases. The data stem from a telephone survey covering more than 1500 firms in five European countries that have introduced environmental innovations recently. Environmentally beneficial product and service innovations create jobs in contrast to process innovations. Employment changes occur in the wake of major innovations only and especially in small firms and firms with positive sales expectations. While innovations purely motivated by environmental goals tend not to have employment effects, cost reductions envisaged by environmental innovations reduce employment. We detect skill biased technological change of environmental innovations. Environmental innovations have a small but positive effect on employment on the firm level. Thus, environmental support programmes do not counteract labour market policy. A further shift from end-of-pipe technologies to cleaner production, especially towards product and service innovations, would be beneficial for the environment and creates jobs.

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The Employment Impact of Cleaner Production on the Firm LevelEmpirical Evidence from a Survey in Five European Countries

. This paper provides evidence of the productivity effects of different continuing vocational training forms in Germany. Using the waves 1997–2001 of the IAB establishment panel, it is found that formal external courses have the largest positive impact on productivity. Formal internal courses and quality circles have a smaller positive impact. Self-induced learning, participation at seminars and talks and job rotation do not enhance productivity while training on the job has a negative productivity impact. Establishments with an inefficient production structure decide to offer training in order to boost productivity. This paper also shows that taking into account selectivity of the training decision, unobserved time-invariant heterogeneity, human resource practices, as well as establishment and employee characteristics has an important impact on the measurement results.

Continuing Vocational Training Forms and Establishment Productivity in Germany

In most Western, industrialised countries the workforce is ageing rapidly. In order to assess the possible consequences of an ageing workforce, this paper measures the impact of changes in the age structure of establishments on productivity using representative linked employer-employee panel data. We take into account that the levels as well as the changes in the age structure of establishments and their production are likely to be simultaneously determined and apply dynamic GMM methods. We find that establishment productivity increases with the share of employees until the age of 50-55 and only decreases slightly afterwards. Our findings suggest that previous estimations are biased because they either do not take into account endogeneity, time dependencies, or crucial information correlated with age shares and productivity. Large standard deviations point to important variation in the age productivity profile among establishments.

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Thomas Zwick

Papers

Employee participation and productivity

The Impact of Training Intensity on Establishment Productivity

The Employment Impact of Cleaner Production on the Firm LevelEmpirical Evidence from a Survey in Five European Countries

Continuing Vocational Training Forms and Establishment Productivity in Germany

Age and Productivity - Evidence from Linked Employer Employee Data