I read that today too, Pachyderm. I submitted a comment (but it's still awaiting moderation) about it because that's not good news for those of us who are intensely focused on negative childhood issues and unpleasant memories in long-term psychodynamic therapy. If our brains are already wired to look for danger and to pay more attention to unpleasant thoughts, feelings, and events, then it seems we'd be reinforcing and strengthening those neural connections that lead to even more automatic negative thinking. I'm not liking that idea a whole lot.