Every Circle In This Image Is The Same Color

The researcher says "seeing actual human bodies may set a more realistic point of comparison than photoshopped bodies presented in mass media". I can't find the paper to see if it factored in that some of the people in the drawing class might have a good idea of what 'actual human bodies' look like. For examples, the beach, the changing room at a gym or pool, or someone who works as a massage therapist or nurse/caretaker. I would also like to know how the anxiety of being a new student in a new subject, knowing there would be a nude model, vs. the relief and pleasure of having succeeded in doing the class, was a factor.