Psychic Powers (DnD Sense Motive Skill Use)
From D&D Wiki
|This material is published under the OGL|
 Sense Motive
In addition to its normal uses, characters can use Sense Motive to determine if someone is under the influence of a mind-affecting psychic skill, even if the person isn’t aware of it himself. This requires a DC 25 Sense Motive check, with no retry.