We report on the temporal stability of the parameters of the NBD-Dirichlet model, a well-known stochastic theory of buying behaviour. This model is widely used and recommended as a stationary market benchmark against which the dynamic effects of marketing interventions can be assessed. Yet there...

It is a common belief that users of a brand in one category are more likely to purchase brand extensions than non-users of the brand. This study examines whether extensions actually do facilitate purchase of the brand in a second category. We analyze one year of household purchasing data for...

This research investigates changes in brand loyalty as households pass from one stage of the household life cycle to another. Analysing 45 brands in three consumer product categories in the UK, we find that the changes follow a U shape pattern. Brand loyalty declines sharply as households shift...

Analysis of category and brand purchase rates using Nielsen-Kilts 2014 panel data for the US show they closely fit the Negative Binomial Distribution. Data for Carbonated Soft Drinks, over the counter Pain Medication and Breakfast Cereal are used

This study examines behavioral brand loyalty in a product category that, based on industry evidence, is expected to exhibit high loyalty: liquor (distilled spirits). The motivation for the study is to extend knowledge of the factors that underlie behavioral loyalty, including brand...

An apparent paradox in brand metrics data is that the aggregated buyer base of each brand appears to buy the category at above the average rate. This seems arithmetically impossible. The effect is real, but it has a simple explanation. It is caused by the fact that heavy category buyers buy more...

This paper uses a sample of approximately 60,000 US households to document fundamental basket size patterns across a range of retailer types (e.g. grocery stores, convenience stores, and warehouse clubs), and studies them in relation to retailer performance metrics (unit sales and dollar...