A recent study proves that at least some people possess an independent sixth sensethat allows them to detect whether someone is watching them. In the study, subjects were seated one at a time in the center of a room facing away from a large window. On average, subjects decided correctly 60 percent of the time whether or not they were being watched through the window.
A similar result was found when the subjects were watched from another room on a video monitor, if true, most supports the conclusion drawn from the study mentioned above.