We have to be able to see it demonstrated, but the value is in describing the cluster of actions that look like creativity, customer service, leadership is in the ability to obtain a higher result. This is difficult because the definition of competencies can easily look like busy work. Competency interviewing requires descriptions of situations where people had actually demonstrated the emotional makeup to do a particular type of job naturally. We are dealing with emotional intelligence. There currently is no consistency on what is really needed to do a particular job, and this results in unsuccessfully hiring people into a position.
Cultural diversity is the requirement of the new millennium.
The twins were very alike in their lifestyles and jobs. It may be possible to identify competencies in the same way as DNA is identified. Make sure you use the model to select, train, develop, and reward people, or it isn't worth the expense. Don't take the time to implement this type of system unless you are going to really use it or the HR organization will lose credibility. Many companies identify competencies but don't reinforce them in alignment with the way they really hired employees.