In many markets, such as video streaming or information services, a consumer may purchase multiple competing products or services. The existing theoretical literature typically assumes that each consumer can buy only one product. This paper explicitly models the consumer's multi-purchase...

In recent years, mobile communications technologies and online sharing platforms have made collaborative consumption among consumers a major trend in the economy. Consumers buy many products but end up not fully utilizing them. A product owner's self-use values can differ over time, and in a...

Consumers are often uncertain about their valuations for product quality when choosing among different products and will learn their valuations only after buying and using a product. Some consumers may thus experience over-purchase or under-purchase regret, depending on whether they have...

The trend towards giving consumers choice about their health plans has invited research on how good they actually are at making these decisions. The introduction of Medicare Part D is an important example. Initial plan choices in this market were generally far from optimal. In this paper, we...