Psychokinesis (also known as telekinesis) involves moving objects mentally (with the mind) instead of physically (with the body or other physical object).
In 2379, Chivaul, who was a Vulcan master, martial-artist, and Starfleet scientist/teacher, achieved telekinesis and attempted to experiment with it on one of his students. He tested a theory of his that could be described somewhat like "controlled-evolution" by mind-melding with the student, Keth. During the mind-meld, he attempted to use telekinesis to control Keth's cells. Unfortunately, Chivaul had unknowingly encountered an unknown alien during his transit from Boreth, not too long earlier, and a remnant of this alien interfered with the mind-meld. The result was Keth partially transforming (on the genetic level) into an unknown alien creature. (Star Trek: Evolutions)