Studies on user behaviour

Hi list, I am looking for studies on how user behaviour changes under surveillance. I have no insights at all in the social studies academic space, so I am very curious if there is any serious work being done. Older studies, say from Stasi times and until now are very welcome. A quick search on the net gives me the following, http://bits.blogs.nytimes.com/2013/08/26/how-surveillance-changes-behavior-a... "How Surveillance Changes Behavior: A Restaurant Workers Case Study" But there must be much more out there.