[b]Which type do you prefer?[/b]
[b]Group Study[/b] improves old habits and expands students' perspectives.
[b]Self Study [/b] is effective especially if you're that [i]memorizer[/i] type of student.
I'd prefer self study for maths and sciences. Because I hate waiting on people's answers.
I like group studies on opinion/perspective-based classes like English, Philosophy and History. I'm weak at those areas, too.
Self study. Based on my experiences we don't finish a single topic when we are on a Group study we just usually hang out instead of opening books and notebooks.