This paper examines the application of count data models to firm level panel data on technological innovations. The model the authors propose exhibits dynamic feedback and unobserved heterogeneity. We develop a fixed effects estimator that generalizes the standard Poisson and negative binomial...

<abstractinfo format="display"> We analyse the impact of product market competition on unemployment, and how this depends on labour market institutions. Theoretically, both firms with market power and unions with bargaining power are constrained in their behaviour by the elasticity of demand in the product market. We use...</abstractinfo>

Recently the data underlying the Annual Census of Production has been made available to academic economists in the United Kingdom. The data provide information on production activity in the United Kingdom at the plant level. This paper provides some preliminary description of the data and...

Analysing the new IFS-Leverhulme database on over 200 major British firms since 1968 we show that patents have an economically and statistically significant impact on firm-level productivity and market value. While patenting feeds into market values immediately it appears to have a slower effect...

We use an innovative methodology to measure management practices in over 300 manufacturing firms in the UK. We then match this management data to production and energy usage information for establishments owned by these firms. We find that establishments in better managed firms are significantly...

The exact measurement of the welfare costs of tax and price reform requires a detailed knowledge of individual preferences. Typically, first-order approximations of welfare costs are calculated avoiding detailed knowledge of substitution effects. The authors derive second-order approximations...

This paper studies the paths from inequality in earnings to inequality in household consumption. We show that careful study of the evolution of the variances and covariances of earnings and consumption within cohorts across time can identify permanent and transitory shocks. We present an...

This survey is designed to emphasize the relationship between empirical a nd theoretical considerations in the analysis of consumer behavior. A lthough it focuses primarily on analysis at the individual or micro l evel, it tries, where possible, to draw implications for the estimati on of...