Cross-Examination
When the lawyer for the plaintiff or the government has finished questioning a witness, the lawyer for the defendant may then cross-examine the witness. Cross-examination is generally limited to questioning only on matters that were raised during direct examination. Leading questions may be asked during cross-examination, since the purpose of cross-examination is to test the credibility of statements made during direct examination. Another reason for allowing leading questions is that the witness is usually being questioned by the lawyer who did not originally call him or her, so it is likely that the witness will resist any suggestion that is not true. When a lawyer calls an adverse or hostile witness (a witness whose relationship to the lawyer’s client is such that his testimony is likely to be prejudicial) on direct examination, the lawyer can ask leading questions as on cross-examination.
On cross-examination, the attorney might try to question the witness’s ability to identify or recollect or try to impeach the witness or the evidence. Impeach in this sense means to question or reduce the credibility of the witness or evidence. The attorney might do this by trying to show prejudice or bias in the witness, such as his or her relationship or friendship with one of the parties, or his or her interest in the outcome of the case. Witnesses may be asked if they have been convicted of a felony or a crime involving moral turpitude (dishonesty), since this is relevant to their credibility.
Opposing counsel may object to certain questions asked on cross-examination if the questions violate the state’s laws on evidence or if they relate to matters not discussed during direct examination.