error of judgment rule
error-of-judgment rule. The doctrine that a professional is not liable to a client for advice or an opinion given in good faith and with an honest belief that the advice was in the client’s best interests, but that was based on a mistake either in judgment or in analyzing an unsettled area of the professional’s business. • For example, an attorney who makes an error in trial tactics involving an unsettled area of the law may, under certain circumstances, defeat a malpractice claim arising from the tactical error. — Also termed judgmental immunity.
