 They differ from what is sometimes called the "behavioral confirmation effect", commonly known as "self-fulfilling prophecy", in which a person's expectations influence their own behavior, bringing about the expected result.Some psychologists restrict the term "confirmation bias" to selective collection of evidence that supports what one already believes while ignoring or rejecting evidence that supports a different conclusion.Others apply the term more broadly to the tendency to preserve one's existing beliefs when searching for evidence, interpreting it, or recalling it from memory.