This research examines long-term loyalty change in a wide variety of FMCG categories in the UK and the USA, over time periods ranging from six to thirteen years. The study uses three loyalty measures: polarization index (φ), average brand share of requirements (SCR), and average repertoire...

This study analyzes data on cigarette purchasing using an extensive panel dataset. Major findings are: (1) cigarette purchasing in this market exhibits a reverse-J, or NBD (Negative Binomial Distribution)-like shape: many infrequent buyers and fewer frequent buyers; (2) Cigarette brands do...