Diepen, M. van

mailing charity effect response donation behavior model irritation amount number individual result marketing guilt research table variable example people experiment revenue donator study journal sample frequency parameter decision future level period strategy probability distribution promotor estimate value target advertising chaid chapter segment selection field event response behavior survey field experiment organization measure mailing frequencies company database recency analysis response rate mailing strategies consumer competition subject management difference goede category equation fidence intervals driver increase interaction doelen prediction target selection attitude van diepen activity impact feeling mail pressure charity 2 dataset