The plural of 'anecdote' is not 'data'. Is anyone else who's been following this discussion disturbed by the absolute paucity of any hard evidence to support a

The plural of 'anecdote' is not 'data'. Is anyone else who's been following this discussion disturbed by the absolute paucity of any hard evidence to support any of the arguments given? It appears to me that nobody (including me) actually knows anything, statistically speaking, about what the differences are between self-taught and CS-educated programmers. Everyone has an opinion, and some anecdotal evidence (I worked with ... or I've met ...), but that's a far cry from hard data. Is anyone aware of any studies that might shed some light on the topic?