Lots of comments here that have nothing to do with the study. They took the same stories in both cases, and just replaced "marker words" that made the work either literary fiction (narrative realism) or science fiction. The exact versions were published in the second blog, so anybody can read them and compare. The people surveyed didn't try as hard to get the full meaning when reading the science fiction versions. That's the conclusion from the study, that people take it easier when reading genre fiction.
So all you gripers, stop taking it easy and at least read about the study before complaining. It's not genre fiction, so you'll need to concentrate a bit.