Final answer:
To avoid interference effects on memory, the text recommends all methods except studying material that is similar in content in a back-to-back fashion.
Step-by-step explanation:
The text recommends all of the following methods to avoid interference effects on memory except for studying material that is similar in content in a back-to-back fashion. When studying, it is important to practice new memories beyond the point necessary to reproduce them without error, study material directly before going to sleep, and practice or rehearse fresh memories aloud. However, studying material that is similar in content in a back-to-back fashion can lead to interference and make it difficult to recall the information accurately.