No feature of human judgment and reasoning illustrates this trade-off of advantage and disadvantage better than the tendency for our expectations, preconceptions, and prior beliefs to influence our interpretation of new information. When examining evidence relevant to a given belief, people are inclined to see what they expect to see, and conclude what they expect to conclude. Information that is consistent with our pre-existing beliefs is often accepted at face value, whereas evidence that contradicts them is critically scrutinized and discounted. Our beliefs may thus be less responsive than
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