CONSUMER PROMOTION AND PURCHASE TIMING - THE CASE OF CHEESE

The dynamics of cheese purchases is analysed by estimating a series of econometric models of duration based on a 170 week household panel. B esides purchase quantity and price data, information with respect to c oupon use and household demographic characteristics are used in a vari ety of models which build upon each other in terms of assumed distribu tion of interpurchase time, effect of previous purchases, role of demo graphic characteristics and effect of unobserved interpurchase time he terogeneity. Likelihood ratio tests clearly reject the null hypothesis that coupon use has no impact on cheese purchase timing.