Brenton has been around since the dinosaurs, in fact he may even be the original bowlasaurus - and what he says is right on the money, looking at scores or not looking at them has its own benefits and problems which you could rue later on.
People are made up of two types, runners and chasers, you need to know which one you are - if you like not having the thought of chasing - then bowl first and let all of the worries dissappear and just post whatever you get, how you attack that, both physically and mentally, is the difference of where you finish, chasers like to know what they need and adjust their methodology to suit, so if its tough they tough it out if not they know they can loosen up a bit and just go for it. Looking at what the previous squad has done gives and indication of how you should play, looking at update scores as you bowl can play real tricks on your mind and blow you out of the water especially if you don't look at them in the proper perspective. Normally runners don't make good chasers and visa versa, it takes training to be reasonable at both - I can't believe I am saying this but I agree with brenton, look at how other people are coping, if you see frustration then learn from that and adjust your game rather than pressuring yourself to HAVE to bowl a 230 or so ave last 3 games to cut- as I tell my junior development squad "if you keep your head, while everyone loses theirs, at the end of the day you will be the tallest in the room" - To look or not to look that is the question, how you handle the answer is another matter - good luck