Using no mathematics other than a simple arithmetical example, this article reviews
fundamental difficulties in applying Markov theory to brand-switching data. No successful …

Replication is little discussed in the statistical literature nor practiced widely by statistically
minded researchers. It is needed not merely to validate one's findings, but more importantly, to …

Consumers show low store loyalty and little or no segmentation between different chains or
store groups when buying a grocery product in the United Kingdom. Store penetration, …

… Channon, and ASC Ehrenberg… Ehrenberg ASC, “Towards an Integrated Theory of
Consumer Behaviour,” Journal of the Market Research Society, 11 (October 1969), 305–37 …

Previous research has confirmed that price promotions result in short peaks in sales. This
has led to increased expenditure on price promotions running to billions of dollars. However, …

The development of the models described in Repeat Buying started some forty years ago
with the study of consumer panel data for particular brands showing the number of panel …

In any given time period, a small brand typically has far fewer buyers than a larger brand. In
addition, its buyers tend to buy it less often. This pattern is an instance of a widespread …

Sales of a brand are determined by measures such as how many customers buy the brand,
how often, and how much they also buy other brands. Scanner panel operators routinely …

… We take the view that individual purchases occur in an as if random manner (eg
Ehrenberg, 1982, … Assumption C is in line with general experience across a wide range of …

In this article Mr Ehrenberg shows how data on purchases of non-durable consumer goods
can be fitted by the negative binomial distribution, and discusses applications of this finding. …