"okay, your recital is next saturday night," candy reminded her piano student. "you're doing great but for the next couple of days, i want you to practice by starting with the middle third of the piece until you've got it down perfectly." —as a piano teacher, candy is trying to her student counteract which of the following memory tendencies?

The serial position effect .

Explanation:

When learning something, we tend to retain best the very first as well as the very last information that we stumble upon. This is called serial position effect.

Primacy effect refers to a significantly better memorization of the first part of a text or a lesson while recency effect indicates that the most recent information is better memorized.

Keeping this in mind we understand that Candy is very well aware of this phenomenon, indirectly instructing her students how to overcome it.