Philosopher S. Matthew Liao writes, in his blog:
…Our research applies this experimental philosophical methodology to Judith Jarvis Thomson’s famous Loop Case, which she used to call into question the validity of the intuitively plausible Doctrine of Double Effect. We found that intuitions about the Loop Case vary according to the context in which the case is considered. We contend that this undermines the supposed evidential status of intuitions about the Loop Case.
That and other details are in the study
“Putting the Trolley in Order: Experimental Philosophy and the
Loop Case,” S. Matthew Liao (NYU), Alex Wiegmann (Göttingen), Joshua Alexander (Sienna), and Gerard Vong (Fordham), Forthcoming in Philosophical Psychology, epub June 5, 2011.