The three different ways in which a psychologist may achieve or maintain competence in a specific area of practice is learning a skill, putting it in practical application and then supervising it.
Supervision does play an important role in maintaining competence as it guides the development of meta competence, keeping an eye on the psychologists' development of skills as well as his or her knowledge.
Competence refers to the psychological need to exert a meaningful effect on one's surroundings. Here one has the desire to develop a particular skill and then experience it working in action. In psychologies, achieving competence means getting the desired skills and having knowledge about the same.
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