Primacy. the state of being first, often creates a strong, almost unshakable impression and underlies the reason an instructor must teach correctly the first time and the student must learn correctly the first time. Also, if the task is learned in isolation, it is not initially applied to the overall performance, or if it must be relearned, the process can be confusing and time consuming. The first experience should be positive, functional, and lay the foundation for all that is to follow.