These are two videos on confirmation bias in human psychology. Only the first 3:40 of the second video talks about creationism but it's worth watching because it can be applied to almost any part of any worldview.
YouTube - Pitfalls of Thinking: Confirmation Bias (1/2)
YouTube - Pitfalls of Thinking: Confirmation Bias (2/2)
YouTube - Pitfalls of Thinking: Confirmation Bias (1/2)
YouTube - Pitfalls of Thinking: Confirmation Bias (2/2)
