Where do the competencies for an employee's career role get their ratings from?

The ratings for the current level and target level competencies that are displayed for an employee's career role (when they click Know your role) come from here:

• The target level rating (also known as the Minimum Proficiency Level and Maximum Proficiency Level) comes from the employee’s job or position profile, if the target level has been set.
• The current level rating comes from an employee’s talent profile (also known as person profile) based on their self-evaluation. If they haven’t provided a self-rating, this value will be blank.