Prior consistent statements and prior inconsistent statements

Prior consistent statements and prior inconsistent statements, in the law of evidence, occur where a witness, testifying at trial, makes a statement that is either consistent or inconsistent, respectively, with a previous statement given at an earlier time such as during a discovery, interview, or interrogation. The examiner can impeach the witness when an inconsistent statement is found, and may conversely bolster the credibility of an impeached witness with a prior consistent statement.