[valjavec]

You can take a look at Dan Ariely's fascinating talk about the topic from DLD http://www.dld-conference.com/videos/video/predictably-irrat...

[eugenem]

He also has a really good TED talk - http://www.ted.com/talks/dan_ariely_on_our_buggy_moral_code....

He talks about how people's moral standards and decisions are influenced by the environment they are put in.

[scott_s]

I also liked his book, also called "Predictably Irrational": http://www.amazon.com/Predictably-Irrational-Revised-Expande...