In many lectures I heard, I basically copied the lecture notes of the professor from the board into my notebook (I study mathematics). For me those lectures are comparable with going into the library, taking a textbook and making a handwritten copy from it.
The question I asked myself today: Is there a study investigating what is more effective? Going to lectures where I copy the professor's lecture notes from the board or making a handwritten copy from the lecture notes by myself?
(I assume here that the lecture notes are available, e.g. from the lecture's homepage)
On the one hand the professor might give additional comments in the lecture. On the other hand one can take the time he needs to understand a complicated paragraph when he works by himself and is not in the lecture. One also can skip easily understandable parts when he works by himself...