[squidi]

I have seen the performance of teams turned around by experienced managers. The key seems to be making it clear what you expect and why - checking if they understand what that is - and reinforcing it.

Another route can be just setting a great example and they will be inspired to follow you.

There is probably research out there about turnaround skills for a team.

There's no harm in trying as long as you just don't be a jerk to them. They probably have not been trained or shown what high performance looks like.

Best of luck!