The Idea in Brief

A car rental agency includes insurance unless you specifically decline it. A software vendor recommends clicking “next” for a quick install. These companies have designed defaults for customers.

Well-designed defaults simplify decision making, enhance customer satisfaction, and drive profitable purchases—benefiting companies and consumers. Ill-conceived defaults can backfire. When Facebook began displaying members’ purchases by default, users screamed “Privacy invasion!” and launched a class action lawsuit.

Defaults have strategic importance, so don’t leave them to programmers or forms designers, say Goldstein and his coauthors. To design effective defaults, understand which types to use when. For example:

  • If you expect most of your customers would prefer a basic product or service configuration, use a mass default. Online retailers’ standard shipping default is an example.
  • If you think customers would value options tailored to their preferences, use a personalized default. For instance, a hotel makes nonsmoking rooms the default for guests who requested them before.

The Idea in Practice

Mass Defaults

These generic defaults are useful when the majority of customers prefer one basic product or service configuration or can benefit from standardized recommendations (for example, the default ensures maximum safety). If you lack information about customers’ preferences, mass defaults may be your only option.

Personalized Defaults

These capitalize on your knowledge about customers and can be tailored to better meet their needs.

When car rental agencies include insurance unless you specifically decline it, or software vendors recommend that you click “next” for a quick install, they’re choosing default options for you—covertly or overtly guiding your choices. Well-designed product or service defaults benefit both company and consumer by simplifying decision making, enhancing customer satisfaction, reducing risk, and driving profitable purchases. Ill-conceived defaults (or, simply, defaults no one thought much about) can leave money on the table, fuel consumer backlashes, put customers at risk, and trigger lawsuits—costing companies dearly.

A version of this article appeared in the December 2008 issue of Harvard Business Review.