Psionic Skill

Psi Skill is a rating of the effectiveness with which the soldier can use his inherent psionic ability.

Starting Values

New recruits will always begin with a value between 16 and 24. This is awarded upon completion of first month's Psi Lab training.

Maximum Caps

An X-COM soldier's Psi Skill has a combat increase cap at 100, but can continue to grow past that through Psi Lab training.

Improvement

Is increased through use of Psi on the battlefield, and through Psi Lab training. Both successful and unsuccessful psi attempts during combat result in improvement.

Note that unlike any other skills, Psi Skill is not truly capped. Although you will cease to get any more combat increases once you reach 100, you will still get approx. 2-3 skill points per month as long as you stay in Psi training. (Not that it matters... you'll never fail a mind control with a Skill of 100, if your Psi Strength is fairly high.)

Also note that Psi Lab training (for a given month) is lost if the soldier is transferred to another base, even if the destination base has Psi Lab space available.