Boone (2008a) proposes a new competition measure based on Relative Profit Differences (RPD) with superior theoretical … indicator fails to correctly indicate competition. A proposed augmented indicator based on RPDs performs better. The traditional … Lerner-Index is still the only meas-ure that correctly indicates the expected competitive changes. -- Competition ; Boone …

market power appears to be constrained by competition and largely determined by demand side factors. Finally, we find that …

market power appears to be constrained by competition and largely determined by demand side factors. Finally, we find that …

dispersion increases with competition. We find that competition has a negative effect on price dispersion, in line with the … textbook treatment of price discrimination. Specifically, the effects of competition on price dispersion are most significant … routes with a more homogenous customer base, the effects of competition on price discrimination are largely insignificant. We …

We analyse the relationship between the quality of a GP practice in England and the degree of competition that it faces … obtained from the national GP patient survey). The association between increased competition and higher quality is found for GP … fraction of the potential benefits to patients from increased choice and competition …