They want to know why so many young lay Catholics aren't sticking around, so they're asking the *bishops* to fill out a questionnaire?  Oh for Pete's sake....  What will that questionnaire tell them that they don't already know?  The same research they apparently expect the bishops to review is just as available for the Vatican.  Unless the Vatican thinks it'll force the bishops to look at the issue and actually do something about it (fool's errand, IMHO), what is the point?