I need the description to use in my research. The task was first used by Morrow and Nolen-Hoeksema in 1993 but I have not manage to find a good description of the task yet.
I'm not sure how helpful the attached articles will be. They describe the procedure to some extent, and a couple of them predate the one you cite & appear to go into greater depth. There was a whole series of these pieces, mostly appearing in JPSP, and the authors definitely abbreviated the description of the procedure as they went along.
I think you could construct a very similar induction based on this information. However, if you want to be sure your procedure is as close as possible to the original, you ought to establish contact with the authors. Unfortunately, Susan Nolen-Hoeksema died a few years ago (complications from surgery, I think). But Jannay Morrow is on the psychology faculty at Vassar College. And Sonja Lyobomirsky, who also collaborated on many of these studies, is at the University of California/Riverside. I've included links to their web sites; these contain contact information. I am sure they would be willing to help you out - though Sonja has become quite a celebrity in recent years and may be more difficult to reach!