In my experience the effect is minimal and tends to be overshadowed by other, stronger effects. For example, at my last office job I had a laptop plus monitor setup at my desk, but unsurprisingly found that I was usually much more productive if I took my laptop to an empty conference room. Of course it's possible I'm just doing it wrong.
Right now I work at home and sometimes at coffee shops and I find the flexibility of choosing where I work (and in what posture) to be well worth the missing screen real estate. I am strongly considering the purchase of a new "Retina" Macbook Pro, but I don't anticipate huge productivity gains because of the extra pixels.
I took part in a recent discussion in the current Open Thread about how instrumental rationality is under-emphasized on this website. I've heard other people say similar things, and I am inclined to agree. Someone suggested that there should be a "Instrumental Rationality Books" thread, similar to the "best textbooks on every subject" thread. I thought this sounded like a good idea.
The title is "resources" because in addition to books, you can post self-help websites, online videos, whatever.
The decorum for this thread will be as follows:
I think depending on how this thread goes, in a few days I might make a meta post on this subject in an attempt to inspire discussion on how the LessWrong community can work together to attempt to reach some sort of a consensus on what the best instrumental rationality methods and resources might be. lukeprog has already done great work in his The Science of Winning at Life sequence, but his reviews are uber-conservative and only mention resources with lots of scientific and academic backing. I think this leaves out a lot of really good stuff, and I think that we should be able to draw distinctions between stuff that isn't necessarily drawing on science but is reasonable, rational, and helps a lot of people, and The Secret.
But I thought we should get the ball rolling a little before we have that conversation. In the meantime, if you have a meta comment, you can just go ahead and post it as a reply to the top-level post.