How do you stop Ball Watching?

I see it at even the highest level...ball watching. What is it that causes a player to stop and watch as the other team is crashing the goal to score. Sure, the shot you're watching is likely to go in, but when the keeper makes a great save, the person you should still be marking has continued toward the goal and gets and easy score while you stopped to watch.

I've seen it on my team. I will work on this in practice by giving the ball watchers some empathy for the keeper. If I see ball watching, suddenly that player will be the only member of her team in the scrimmage. 1 v whatever. Now she'll feel what its like to have her teammates quit on her. Maybe this will change the ball watcher into a player that never quits.

-Bill