An example of evidence that is potentially relevant but excluded for its prejudicial effect is evidence of past convictions. A court's role is to determine what happened, and who was responsible, evidence of previous convictions could suggest that the defendant is capable of committing a crime, but the effect of the evidence would too often make the judge or jury (jury in particular) ''assume'' that the defendant was guilty, irrespective of the facts of the case. There are some limited exceptions to when a defendant can be cross-examined on their past convictions, generally surrounding where the defendant has made an issue of their good character. | An example of evidence that is potentially relevant but excluded for its prejudicial effect is evidence of past convictions. A court's role is to determine what happened, and who was responsible, evidence of previous convictions could suggest that the defendant is capable of committing a crime, but the effect of the evidence would too often make the judge or jury (jury in particular) ''assume'' that the defendant was guilty, irrespective of the facts of the case. There are some limited exceptions to when a defendant can be cross-examined on their past convictions, generally surrounding where the defendant has made an issue of their good character. |