The types of misconduct that are not subject to criminal conviction but are still admissible to impeach a witness include the following. The witness has cheated at cards, lied on other occasions, and cheated on exams in school, etc. This type of information is admissible if, in the majority view, it has a clearly probative value and does not involve unreasonable risk of prejudice. The matter is for the trial judge to decide at his discretion. Some states prohibit this type of impeachment and others leave the door wide open.