Mark Lebedew once shared a video clip on his Facebook page. If features USA and UCLA men’s coach John Speraw talking about how errors are handled in coaching volleyball. I would embed it here for easy viewing directly. It’s got some privacy settings, though, which don’t allow that. You’ll need to click the link. It’s definitely worth checking out.
The video is only about a minute long, but it summarizes quite nicely my own views on the subject.
Basically, John talks about the importance of addressing the subject of errors with players and the team in a way that avoids them being afraid of making mistakes. Instead, coaches should encourage risk taking as part of the development process. This is something I’ve written about before. It’s one of the first things I talk about with any team I take charge of when we have our first meeting.