Guidelines for Observers

Observers can be important to your test for a variety of reasons, not the least of which is being able to use their notes later. Vou should encourage people to observe testing sessions regardless of whether you have a laboratory setup or are using a less formal arrangement.
Whether your observers will be in the room with you and the participant or in a separate observation area from the test participant, it is always a good idea to give observers some direction, because this may be an unusual activity for them. Vou should at least develop a list of pointers about what to do and not do while observing.