Behind a paywall
But freely available from one of the authors' website.
Basically, pigeons also start with a slight bias towards keeping their initial choice. However, they find it much easier to "learn to switch" than humans, even when humans are faced with a learning environment as similar as possible to that of pigeons (neutral descriptions, etc.). Not sure how interesting that is.
We've had these for a year, I'm sure we all know what to do by now.
This thread is for the discussion of Less Wrong topics that have not appeared in recent posts. If a discussion gets unwieldy, celebrate by turning it into a top-level post.