sometimes automation bias in clinical settings is a major problem that renders cdss, on balance, counterproductive; sometimes it is minor problem, with the benefits outweighing the damage done. one study found more automation bias among older users, but it was noted that could be a result not of age but of experience. studies suggest, indeed, that familiarity with cdss often leads to desensitization and habituation effects. although automation bias occurs more often among persons who are inexperienced in a given task, inexperienced users exhibit the most performance improvement when they use cdss. in one study, the use of cdss improved clinicians' answers by 21%, from 29% to 50%, with 7% of correct non-cdss answers being changed incorrectly.