Retroactive Interference

Definition

Retroactive interference is a psychological phenomenon that occurs when new information disrupts or interferes with the ability to recall previously learned information. It happens because our brains are constantly processing and organizing information, and sometimes new memories can "overwrite" or make it harder to access old ones.

Example

You are studying for two exams: one in biology and one in chemistry. You spend a week learning about photosynthesis in biology, memorizing the process and key terms. Then, the next week, you start studying chemistry and learn about chemical reactions and formulas. If, during your biology exam, you struggle to remember the details of photosynthesis because you keep mixing it up with what you learned in chemistry, that’s retroactive interference. The new information from chemistry is interfering with your ability to recall the older information from biology.

Why It Matters

Retroactive interference matters because it highlights how our brains prioritize and organize information. Understanding this concept can help students develop better study habits, such as spacing out their learning or separating topics that are too similar. It also emphasizes the importance of reviewing material regularly to strengthen old memories against new information. By being aware of retroactive interference, educators can design lessons and tests in ways that minimize its effects, helping students retain knowledge more effectively over time.

See Also

• Proactive Interefence