This paper estimates concentration in Irish manufacturing industry (1991-2001) by applying the McCloughan and Abounoori technique for calculating the concentration ratio given grouped data. The results suggest high aggregate concentration, which appears less a function of multi-plant operations...

This paper presents robust panel data econometric evidence suggesting that more effective competition policy curtails the exercise of market power because countries in which competition policy is judged to be more effective are characterised by lower market price-cost margins, controlling for...

For the first time, empirical estimates of concentration in the British construction sector are provided. The research adds value to published DETR/DTI data on the structure of British construction by applying a novel technique for estimating the concentration ratio proposed by McCloughan and...

A novel method is proposed of estimating market concentration for the census case in which firms are grouped into size classes and all that is known about the firms in each category is their number and aggregate size. The formula arises as a way of applying an alternative expression for the...

Gibrat's law is augmented to produce a more general stochastic model of concentration consisting of growth, entry, and exit processes. Empirical facts on growth, entry, and exit reported elsewhere are employed to calibrate the model, which is then repeatedly simulated, generating concentration...