An interesting source of data on this point is scientific fraud. Let's take a look at scientific work which has been proven to be fake. That tells us what scien

An interesting source of data on this point is scientific fraud. Let's take a look at scientific work which has been proven to be fake. That tells us what scientists would like to publish to advance their careers, without regard to whether it's true or not. Thus any bias in faked research is evidence for political bias in science beyond what is justified by the truth. A good place to start is with the name Diederik Stapel in social psychology.