You want to establish whether a patient is experiencing thought alienation in some form. Before revealing the answer, decide what you would ask.

Ask broadly first whether the patient ever feels that their thoughts are not entirely their own, or that something is happening to their thinking that feels interfered with from outside, before narrowing down to the specific sub-types. If they endorse this, ask about the direction of the felt interference specifically: are thoughts being placed into their mind, taken out of it, or made accessible to other people, since these three distinct sub-types describe genuinely different experiences beneath the umbrella term. Ask them to describe, as specifically as they can, just how the boundary has been crossed, since this is often accompanied by a specific, though sometimes vague, sense of the mechanism involved, and documenting the exact sub-type present is more clinically useful than recording 'thought alienation' alone.