The great failure of the sermon as a vehicle for learning is that as a medium it is not conducive to the changes required for learning. On one level if learning is about skill or knowledge development, then there are approaches that have nothing to do with sermons. I refer to the work of Sweller at UNSW, as an example, and here.
If we want to use the sermon to transform people's attitudes, then it may or may not work. To bed down change, I think we need to reflect on the work of Stephen Brookfield, for instance.
But, what about for people new to Christian faith? Do sermons help them? Well, no. A more structured induction to the life of faith is needed. The early church approached this through a structured path into participation in the church, marked by such tools as the didache, or later, Augustine's enchiridion.
These days we do it differently. If one is lucky (blessed?) one will be able to spend time with a more experienced Christian reading the Bible together and praying and chatting, but this is usually short lived and fails to help a new Christian to the transformation of life and thought that flows out of conversion (and also this on thinking and this too on thoughts). Something better is needed, in my view to help the adult reorient her thought life, her assumptions about relationships and serving others, and taking up one's cross daily.
This thread started here.
