Discuss some of the reasons why managers continue to use unstructured employment interviews despite the abundant evidence that they are not useful for predicting future job performance.
Some managers may have been in their position for years. As folks often do, in any position, they become complacent and tend to just "go with the flow", so to speak. With that in mind, it's quite likely that they either do not know about the abundant research regarding the effectiveness of proper employment interview questions or they simply do not care, or want, to change their methodology.
Most folks are resistant to change ...
This solution discusses some common reasons why a manager would be hesitant to adapt their interviewing skills from "what they know" to a newer, but different, approach.