data set containing the data from the original study and seven replications conducted around the world. Several generalisations have emerged from their analysis. First, consumers’ evaluations of brand extensions are determined primarily by the quality oftheparentbrandandthefitbetweentheoriginalandextensionproductcategories. Second, evaluations of brand extensions are further dependent, but to a lesser extent, on (a) interactions of the quality of the parent brand with the complementarity and transferability of assets and skills between the original and extension product categories, and (b) the perceived difficulty of making the extension.