“The results suggest that traditional lecture-style teaching in U.S. middle schools is less of a problem than is often believed.” There is an article here reporting a pretty narrow study which suggests this, but the commentary after the article is interesting. The upshot of the discussion, in my view, is that with some lecturers on some kinds of topics you can learn a whole lot; but some things you can’t learn by lecture, and some people really shouldn’t be lecturing at all. Ah, the fruits of social science.