Case Studies on effects of Website Redesign?

Need ammunition for higher-ups on positives of redesign

[Philosopher]

Does anyone have any case studies they can point me to on the positive effects that a website redesign can have on business?

I have a client and myself and some of their staff are wanting to redesign their site as it's old and not terribly appealing, but getting some of the decision makers to sign-off on it is taking a bit of doing.

I've seen some things here and there, but can't for the life of me find them now when I actually need them.

This isn't an ecommerce site, it's a company site used for recruiting new customers as well as potential employees/sales reps. etc., but any stats/caste studies would be helpful.

[BeeDeeDubbleU]

I have no stats but I can tell you that over the last ten years I have redesigned websites several times and this has never once had a negative effect.

[Philosopher]

Yeah...not worried about negative effects, I'm really just trying to find additional ammunition to show the decision makers why it will benefit them to have the site freshened up and the design improved.

Statistics always work well, but I'm having a hard time finding some now that I'm actually looking for them!

[timsoulo]

did you Google for:
redesign case study
conversions after redesign
effect of redesign

etc

[Yulia from DNP]

I would go for something like this:Redesigning the site has a physiological effect of new and interesting all over again.
Its the same case where for example apple launches new computer , what for? its not like the old one doesn't work anymore) Well, its not exactly the same with new design ,BUT, it gives you the feeling of renovation, of development,etc etc etc.
i'm all for changing designs, because you always come up with something more interesting and more attractive. So why not change something good for better?I think they just feel like they are redesigning something that people know and trust, and ruing the build up reputation . Well, its not like you change the logo. so its not really important.
Anyway, I would offer to change the design but stay on the same theme.