A duopoly model is developed in which firms' strategic variables include brand quality, the number of distinct market segments to enter and price. Informative advertising is used to overcome consumer ignorance about brands. In contrast to many existing models in which firms engage in price...

The paper examines the impact of regulatory intervention on store card interest rates, for a panel of UK store cards. Panel data estimation methods are used in conjunction with intervention analysis so that the impact of the investigations on store card interest rates can be examined. Results...