One of the easiest ways to comprehend the concept of quality control measures is to think about speeding down the road. There are many reasons why people speed. Perhaps you’re running late, there’s an emergency, or it’s just a beautiful day for a drive. Although most people understand the consequences of speeding, such as receiving a citation or possibly causing an accident, they accept the risk and speed anyway. If you see a cop parked by the side of the road up ahead, however, you immediately slow down and drive the speed limit. The cop acts as the quality control measure, which results in an improvement in behavior, noted Scott M. Mark, PharmD, Corporate Vice President, Corporate and Physician Applications at West Penn Allegheny Health System in Pittsburgh.