There is a lot of data to support these rationality claims. The ability to recognize that people who meditate or pray often; think differently than those who do not has always been apparent to those who know this firsthand. However technology has made it possible to pinpoint the area of the brain that is being affected by thoughts and actions.
Via USA Today, we learn about a study showing that people who meditate frequently behave in a more rational manner than non-meditators, and they do so because different parts of their brain take charge of certain kinds of decisions .
Proof is piling up that meditation is beneficial in more ways than anyone imagined, use of meditation techniques is increasing and reports of the benefits people experience are also increasing.