The program there undertook the only methodical study ever conducted into just how and how long people really grieve. They conducted tracking studies of Kosovar genocide survivors, 9/11 survivors, and so on. It apparently never occured to people in the field of Psychology to do this before the 1990s.
You can disagree all you like, but most folks don't take that long, and sometimes all it takes is shifting your perspective to finally move on.
