Final answer:
When using focused repetition to acquire or polish a skill, you are implementing the Practice principle.
Step-by-step explanation:
When using focused repetition to acquire or polish a skill, you are implementing the Practice principle. Practice is the act of repeatedly performing a task or exercising a skill in order to improve and become more proficient.
This principle emphasizes the importance of consistent and deliberate practice, where you focus on specific aspects of the skill and work towards mastery. Through regular practice, you can enhance your abilities, develop muscle memory, and improve your performance significantly.
For example, if you are learning to play the piano, you would practice specific techniques, scales, and pieces repetitively to refine your skills and build fluency.