Insight
An Insight check determines whether or not you can determine the true intentions of a creature, their motives, whether someone is lying, or anything else that can be determined by watching body language, speech habits, or changes in mannerisms. The base ability used is normally Wisdom.
Detect Lie | Untrained
As an Action, you can try to sense any deception in the words of another creature with a Wisdom (Insight) check. The DC of this check is normally equal to the Deception check of the target creature. Depending on circumstances (such as alien appearances or faces being covered by a mask), a DM may impose Disadvantage on your check. Even a successful check does not explicitly tell you the truth behind the creature's words, but you may be able to assess what topic they are lying about.
Sense Motive | Untrained
You devote an Action to try and assess a creature's present state of mind or the motivation behind their actions with a Wisdom (Insight) check. The DC of this check is normally equal to the Deception or Performance check of the target creature, using their passive score if they are not actively trying to hide their state of mind. Depending on circumstances (such as alien appearances or faces being covered by a mask), a DM may impose Disadvantage on your check.
