Clairvoyance is the art of seeing without using one of the five main senses. It means "clear seeing" in French. It is sometimes called the sixth sense or second sight.
Inside the back of the brain is a gland called the pineal gland. It is called a third eye, or to get even more interesting, the sixth chakra. When humans started to breathe through the nose, it caused the gland to not receive any pranic energy.
The art of clairvoyance comes naturally to some people while others have to work hard to completely control it. Some people become clairvoyant after accidents and other traumatic events. Hundreds of years ago having clairvoyant powers meant you were a witch. To prove clairvoyance, an experiment involving card guessing is used.
Seeing into the future through clairvoyance is called precognition. If you've seen Minority Report, that word may sound familiar.
The information from clairvoyance is recieved in images and symbols.
Telepathy is direct sending of information without any physical contact but through the mind. It's a form of ESP, which stands for extrasensory perception. The name comes from the Greek "tele" (distance) and "pathe" (feeling). Scientific research of telepathy began in 1882 by the first parapsychologists.The existance of telepathy has not yet been proven by scientists. Even though it is not proven, in many cultures, they believe it does exist.
"In a general ESP test the sender concentrates on the face of one card at a time while the receiver tries to think of the symbol. Both subjects are, of course, separated by a screen or some greater obstacle or distance. Scores significantly above chance are extremely rare, particularly as testing methods have become more rigorous. " (Crystalinks.com)
Telepathy is a natural instinct. It's sort of like trying to find a radio station: you tune into the frequencies. Telepathy happens most commonly between family members or close friends. It is much easier to find their frequencies because you spend time with them.
Tests for telepathy began with the Zener card experiments. A set of 25 cards is used with five symbols each used five times. One person looks at the card and sends the information to another person who could be in another room, or even another building.
Psychokinesis (PK) includes telekinesis, levitation, materialization, psychic healing, and rapping. Parapsychologists have been researching it since the 1930s, mainly in the United States and Russia. Most scientists do not believe that PK exists because there is no real way to explain it. Of all psychic abilities, psychokinesis is a very rare ability to have.
Scientific theory does not recognize modes of perception other than those mediated by the sense organs and other body systems, so ESP by definition lies outside the realm of scientific explanation. Claims for the occurrence of ESP therefore remain controversial, although the converse condition also holds, that the existence of ESP cannot positively be disproved. (occultopedia.com)
Many parapsychologists think that it is a demonstration of the physical influence of a person's brain on the physical world.