This is a great introduction for a shy group of experiment participants. All participants remove their underpants but keep on the rest of their clothes. They then perform some other activity (in the case of Experiment #3, practising netball passes) until they forget about their lack of undergarments. While not nudity as such, it does provide a key step on the way to feeling more at ease naked for a group of participants lacking body-confidence.
Seen in Experiment #3.
