I'm looking for research on reading level settings and Google rankings.
Is there any solid research on how or if this affects the default rankings?
It looks like it varies based on the query term. If I set it to various reading levels, sites I manage will go up and down in the rankings. Would it worth trying to "fit in" with or "stick out" with the other results?
Is this area worth exploring, if so, any pointers would be helpful.