To my knowledge, there is no Canadian research on that topic, which is not to say that people don't have opinions about it, as I do. In my view, having a lawyer or some kind of legal representation, either a staff lawyer or a private lawyer, or whoever, is absolutely fundamental and crucial to being able to vindicate your rights. Even if you are, at criminal law, found guilty in the end, you nevertheless have important procedural rights, process rights, charter rights. You need an advocate to help you, who will speak on your behalf.
There is American research that talks about the difference between self-representation and clients who are represented. I don't have that at my fingertips but I can provide it to the committee. I'll track it down.