Only quarrels, or loud noises regardless of origin? I seem to remember that corpora quadrigemina already have a built-in eye-looks-towards-the-sound feature, so perhaps you should not treat it as a failed heuristic:)
I was thinking about online quarrels. It's not just that I notice this in myself, there are websites (or at least one) for people who want to know about other people's quarrels.
I've also noticed a preference in the news for reporting on people who disagree with each other. I think this goes beyond just wanting to show differing points of view.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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