Rule 405. Methods of proving character.

(a) Reputation or opinion. – In all cases in which evidence of character or a trait of character of a person is admissible, proof may be made by testimony as to reputation or by testimony in the form of an opinion. On cross‑examination, inquiry is allowable into relevant specific instances of conduct. Expert testimony on character or a trait of character is not admissible as circumstantial evidence of behavior.

(b) Specific instances of conduct. – In cases in which character or a trait of character of a person is an essential element of a charge, claim, or defense, proof may also be made of specific instances of his conduct. (1983, c. 701, s. 1.)