How to Avoid Fraud in the Market Research Industry

If the average person takes five minutes and someone else is completing it in 30 seconds, that's awfully suspicious. Someone who is sped through the survey often also does another key indicator of fraud. They exhibit a behavior the industry calls straightlining. A common one I always seem to get is, which of these brands are you familiar with? And there are at least one, sometimes it's exactly one, but at least one that's a made up brand name.