Measuring elements such as emotions or feelings such as trust, goodwill, etc., is very problematic at best. Concrete and objective things are believed to exist less concrete things such as leadership, empathy, etc., are not. If you have high order skills to persuade or motivate your colleagues you can barely describe in words how you do it. Skills become visible during a process of interaction and are neither there before nor after. They are not there sitting on a place, such as in a laboratory, making themselves available for scientific study and inspection.
Skills engage people and their moods and emotions.
They affect how they feel about a subject or a proposal. Knowledge, in contrast, affects people by letting them know. When it comes to describing, teaching and mastering skills that approach falls short. We use the theory of knowledge to differentiate between knowledge and skill. We identify the main elements that constitute this picture.