Advantages

The test moderator is more free to move about, take notes use data In. ging software while the test is goinR on, and yet is still wiZ^f proximity of the participant. Being somewhat removed from he par ,c .pant, you need not be a, concerned about controlling body anX mannerisms, and so forth. In addition, you may use a computer w thout distracting the participant. K Ul
The participant does not have a complete sense of isolation, because the participant is still in the room with the test moderator.
This setup is also more likely to encourage the participant to think aloud, than if left alone in the test room.