a heparin-treated catheter was inserted by the research nurse in the antecubital region of the subject’s nonpreferred arm to periodically obtain repeated blood samples during the laboratory sessions. This was followed by a 1-hour adaptation and baseline period during which the subjects were instructed to practice relaxation. At 9 am, subjects were provided headphones and an audio recording presented the instructions for the imagery procedure and the script for guided imagery. The subject’s task was to imagine the situation being described as if it were happening now. Research staff conducting the experimental procedures and blood processing remained blind to imagery condition and subjects were blind to the order of the imagery condition until imagery induction on each day.
