In the old days, designers often had little more than gut checks and rules of thumb to determine the efficacy of creations such as advertisements or newspaper layouts. Later came expensive eye-tracking tests that showed how people scanned pages or computer screens. Now, though, Google, has the benefit of millions of users using its Web site to get things right.
The company, which in May began describing the split A/B tests it uses to see which of two alternative Google interfaces fares better, offered more details Tuesday. The theme: seemingly imperceptible differences are in fact perceptible.
"We test … Read more