The 'Shopping Basket': A Model for Multi-Category Purchase Incidence Decision
Consumers make multi-category decisions in a variety of contexts such as choice of multiple categories during a shopping trip. While complementarity gives managers some control over consumers' buying behavior, co-occurrence or co-incidence is less controllable. Other acts that may affect multi-category choice may be household preferences or household demographics. Not accounting for these 3 factors simultaneously could lead to erroneous inferences.