Telepathy

Telepathy was the psychic ability to sense and manipulate thought, which often manifested as mind-to-mind communication. The term could also be used to describe and was often linked to mind-control and certain types of hypnosis.

According to the Fourth Doctor, the presence of a time fissure could enable humans to develop telepathy and precognitive powers. (TV: Image of the Fendahl)

Telepathy could take varied forms: from an exchange of images, experiences (TV: The Three Doctors), to associated emotions and even mind-to-mind "conversation" between two or more individuals. (AUDIO: Worldwide Web) However, it was possible for a skilled telepath to monitor the minds of others without being detected. Some species and individuals could use their telepathy at a distance, but some  needed to be in close proximity and others  needed to touch the subject they wished to "read". Time Lords, for example, tended to be touch-telepaths, but weren't always limited in this fashion. (TV: The Girl in the Fireplace, The Lodger)

TARDISes such as the Doctor's Type 40 had telepathic abilities through dedicated systems known as telepathic circuits. The circuits translated thoughts (TV: Boom Town) and any language for the passengers. (TV: The End of the World, The Fires of Pompeii)

A rare mineral known as matricite could block telepathy. (PROSE: Synthespians™)

On Yemaya 4 in 2257 several human colonists developed telepathic and telekinetic abilities. (PROSE: Sleepy)

The Eleventh Doctor used a headbutt to telepathically transfer a large amount of information, including general background information, to Craig in order to explain why he was there. (TV: The Lodger)

Telepathic species

 * Gallifreyans (including Time Lords) (TV: The Sensorites)
 * The Master Race (TV: The End of Time)
 * Sensorites (TV: The Sensorites)
 * Humans (TV: Planet of the Spiders, The Face of Evil, PROSE: Sleepy)
 * Eight Legs (TV: Planet of the Spiders)
 * The Xhinn (PROSE: Amorality Tale)
 * Eternals (TV: Enlightenment)
 * Psychic worms (AUDIO: The Wormery)
 * Kitlings (TV: Survival)
 * Cheetah People (TV: Survival)
 * Boekind (TV: New Earth)
 * Weevils (TV: Combat)
 * Arcateenians (TV: Greeks Bearing Gifts, Invasion of the Bane)
 * The Ood (TV: The Impossible Planet / The Satan Pit)
 * Vespiforms (TV: The Unicorn and the Wasp)
 * Silurians (TV: Doctor Who and the Silurians, Warriors of the Deep)
 * Haemovores (TV: The Curse of Fenric)
 * Osirans (TV: Pyramids of Mars)
 * Nestenes (TV: Spearhead from Space, Terror of the Autons, Rose)
 * Bodach (TV: Dream-Eaters)
 * Bane (TV: Invasion of the Bane)
 * Gastropods (TV: The Twin Dilemma)

Individuals with telepathic ability

 * Susan Foreman (TV: The Sensorites)
 * The Doctor (TV: The Girl in the Fireplace, Fear Her, Planet of the Ood, The Eleventh Hour, The Lodger, The Big Bang, The Almost People, Into the Dalek)
 * Timothy Latimer (TV: Human Nature, The Family of Blood)
 * Carmen (TV: Planet of the Dead)
 * Gwyneth (TV: The Unquiet Dead)
 * Face of Boe (TV: New Earth, Gridlock)
 * Ood Elder (TV: The End of Time)
 * Mary (TV: Greeks Bearing Gifts)

Devices to facilitate telepathy

 * Telepathic circuits
 * Telepathic recorder
 * IRIS Machine (TV: Planet of the Spiders)
 * Telepathy pendant (TV: Greeks Bearing Gifts)