What tool is commonly used to assess the level of competence for a defined skill?

The tool that is commonly used to assess the level of competence for a defined skill is a rating scale. A rating scale provides a structured framework for evaluating an individual's proficiency in specific skills or competencies. It allows evaluators to assign a numerical value or a specific level to the person's performance, which can range from novice to expert, for example. This quantitative approach helps organizations gauge where employees stand in their skill development and identify areas for improvement.

While other tools such as competency matrices, performance logs, and skill trackers can also play a role in assessing competencies, they function differently. A competency matrix visually displays the skills required for various roles within the organization and individuals' current skill levels but may not provide the detailed evaluation that a rating scale does. A performance log tracks an individual's accomplishments and activities but does not directly assess the level of competence in a specific skill. A skill tracker can monitor skill development over time but is not primarily designed for initial competence assessment like a rating scale is.

Therefore, the rating scale is the most direct and widely accepted tool for measuring the level of competence for defined skills.