This effect, also sometimes called scopaesthesia, is the phenomenon of supposedly feeling people staring at you. But is that really something you can feel? British psychologist Edward Titchener was the first to write about this concept in his 1898 article "The Feeling of Being Stared At," published in Science magazine. Telepathy? Pfft. Titchener concluded that the effect may just be a self-fulfilling prophecy: you feel like your back is being stared at so you start feeling anxious and twitch around. The twitching and nervous behavior gains attention, so by the time you look around, people actually are staring. In a similar vein, the person you thought was staring at you directs their attention to you because they see your head turning to look at them.
You know the feeling. You just kind of know that someone is staring holes into the back of your head, even though you don't see anyone looking at you. This is the psychic staring effect. But, spoiler alert: feeling it probably doesn't mean you're psychic.