Gupta, Sachin; van Heerde, Harald J.; Wittink, Dick R. - 2008
(brand switching) and the remainder to primary demand effects (timing acceleration and quantity increases). We demonstrate … that this result does not imply that if a brand gains 100 units in sales during a promotion the other brands in the … ratio of the current cross-brand unit sales loss to the current own-brand unit sales gain during promotion, and we report …