An important aspect of marketing practice is the targeting of consumer segments for differential promotional activity. The premise of this activity is that there exist distinct segments of homogeneous consumers who can be identified by readily available demographic information. The increased...

A hierarchical model is developed to account for selection biases that result from processes in which events have a fixed probability of being sampled, but individuals in the population generate events at varying rates. It is shown that inferences about the population parameters from such...

Models of decision-making in multi-level, hierarchical systems in the literature have been restricted to structures where the system is strictly pyramidal in nature. We will show that this restriction has been self-imposed and that existing models can be modified to represent a wide range of...