Persuasion was the action of convincing someone to do or believe something.
In the holoprogram The Voyager Encounter, the Emergency Medical Android provided neural solvent – a clean and efficient inducer of pain – as a far more effective means of persuasion than Harry Kim's crude attempts to obtain information by beating a prisoner, as Kim had requested to hit the prisoner with a hyperspanner which would have caused unacceptable levels of damage and prevent them from speaking. (VOY: "Living Witness")