Psychotronic stability examination
A psychotronic stability examination was a test used to gauge an individual's psychological reaction to the images a computer projected. It was a required test for all Starfleet cadets prior to graduation from Starfleet Academy.

In 2365, Counselor Deanna Troi conducted a psychotronic stability exam on Data following a series of insubordinate acts he had committed. The outcome of the exam determined that there were two distinct personalities contained within Data, the dominant of which was that of Dr. Ira Graves. ()

Images shown
 a meadow with yellow flowers
 a glowing sphere
 a waterfall
 Kareen Brianon
 flames
 a blue planet
 the top view of a  ship
 Ira Graves
 two Starfleet officers kissing
 a Human baby
 Genesis Project video
 the UFP logo with Starfleet Command title
 a hologram of Natasha Yar
 a reed reflected in water ()
 Ira Graves's corpse
 a planet forming ()
 Jean-Luc Picard
 Dexter Remmick possessed by parasitic beings
 Katherine Pulaski
 a Romulan  warbird
 Geordi La Forge without his VISOR
 William T. Riker
  exploding
 Data

Psychology
Medical procedures