I find that it stays the same, in my case.
I'm just as silent in most online games as I am with in-person conversations. Makes team-based games a bit harder, because I dont really want to say anything.... which works out well, as in most cases I have nothing useful to say anyway.
For competetive games I often just mute all incoming voice chat, particularly since online gaming communities tend to be extremely toxic.
Which I think is something you should keep in mind, considering the subject you are gathering info for. Online gaming often turns otherwise friendly people into shrieking jackasses. Tends to very much NOT be a healthy place, as far as social anything goes.
Co-op only games are usually not AS bad, but still bad enough; dont play well enough, or dont KNOW enough, and many teams will just yell at you.