"The researchers believe that verbosity in some ways might be a marker for deception because the person doing the lying is doing a lot to paint a picture that actually isn't true."

"It's worth pointing out here that different studies have produced different results on this, Steve, so context certainly matters. In analyses of online dating profiles, for example, people who lie about themselves have often been found to use shorter descriptions rather than longer descriptions. It could be because dating actually offers better fact checking. If you claim to be a rock climber but refuse to go rock climbing, you'll be very quickly found out.... On the other hand, in a presidential primary debate, politicians might throw out several hundred claims, most of which are not going to get fact checked. So politicians who might actually have greater latitude to stretch the truth."

From an NPR discussion titled "Researchers Examine How To Spot A Lying Politician."

This gets what is one of my favorite tags: clear speech.