Similar to, but not quite. The mystic expend points from a larger pool when using powers. The psychic from stars without number has only a few points to spend and may end up burning then for the day or commit a couple of points for a long as that power is in use. For example, a powerful telekinetic can fly but once they're done the point of effort they spent comes back and can be used for something else. It creates a different feel to the psychic than just spending points. You also have to learn your techniques rather than just having access to everything in a discipline at a given level.So, the same as the Mystic.