I found the linked-to "study" (not sure why scare quotes were used) to be more in-depth: http://blog.ninlabs.com/2013/01/programmer-interrupted/
Less interruptions for developers with offline hours
11–12 of 12 posts
Re: Less interruptions for developers with offline hours
#12FTA "Mornings are for quiet, uninterrupted, and focused work. No emails, no chat, no calls until lunch break." I would agree with that. But how do I solve my addiction to chat? I feel naked when I go offline...
It's definitely not easy. And you'll fall back into old, bad habits from time to time. But going through with it as completely as possible can really make a difference for you productivity.
Ok, I will give it a go. The distractions from Chat are huge when coding. But I just have to look if I see a new chat pop up. So the only option is to bite the bullet and turn it off I suppose.