The Endowed Progress Effect: How Artificial Advancement Increases Effort

Using Combined-Currency Prices to Lower Consumers' Perceived Cost

Drèze, Xavier, (2004)

TOOL KIT - Your Loyalty Program Is Betraying You - Companies have embraced all kinds of gimmicks in recent years to hold on to their best customers and to keep those relationships profitable. Some of them work like a charm, but more of them don't. These are the mistakes to avoid.

Nunes, Joseph C., (2006)

Feeling Superior: The Impact of Loyalty Program Structure on Consumers' Perceptions of Status

Drèze, Xavier, (2009)