Guidance on test and learn / rapid feedback interface design?

1. How do you implement test and learn?
2. What is a test and learn approach?
3. Is it good to test about 5 users on an interface design?

How do you implement test and learn?

Specifically, they need to embrace the “test and learn” approach: Take one action with one group of customers, take a different action (or often no action at all) with a control group, and then compare the results. The outcomes are simple to analyze, the data are easily interpreted, and causality is usually clear.

What is a test and learn approach?

Test and learn is a set of practices followed by retailers, banks and other consumer-focused companies to test ideas in a small number of locations or customers to predict impact.

Is it good to test about 5 users on an interface design?

The best results come from testing no more than 5 users and running as many small tests as you can afford. The most striking truth of the curve is that zero users give zero insights.