NEW YORK (GenomeWeb) – Even with electronic alerts and hard stops built into the process of test ordering, some clinicians will forge ahead with inappropriate diagnostic testing and antibiotic use. In the case of Clostridium difficile testing, researchers at Johns Hopkins University are now bringing in cultural anthropologists and human factors engineers to figure out why some doctors persist in ordering tests for patients that don't fit criteria and guidelines, and they hope to ultimately develop improved computerized support tools.