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Retroactive Interference: Definition, Examples & Quiz

Instructor: Yolanda Williams

Yolanda has taught college information technology and literacy, and has a master's in counseling psychology and business administration.

Retroactive interference occurs when newly acquired information causes us to have trouble remembering old information. Learn more about retroactive interference from examples and test your knowledge with a quiz.

We also recommend watching Retrieving Long-Term Memories: Interference, Amnesia & State-Dependent Memory and Knowledge Organization: Schemata and Scripts

Definition and Example of Retroactive Interference

Suppose that you were an international business major intent on working in Italy and France. You spent the last two years learning how to speak French and managed to master the language. This semester you are taking Italian and find it easy to learn since the two languages are similar.

During break you decide to meet up with some of your friends, all of whom are fluent in French. You try to speak French to them, but find that you have difficulty remembering the vocabulary. Throughout the conversation, you end up speaking Italian instead of French, confusing your friends in the process. This is an example of retroactive interference, which occurs when newly acquired information inhibits our ability to recall previously acquired information.

Introduction to Interference Theory

Interference theory attempts to explain why we have trouble remembering things. According to interference theory, learning new material can sometimes interfere with our ability to recall previously learned material. This is especially true if the new and old material are similar in nature, such as the French and Italian languages. Interference theory assumes that the old information is still being stored in memory, but it cannot be retrieved due to the competition created by the information that has been newly acquired or previously learned.

There are three types of interference: output, proactive, and retroactive interference.

Output interference occurs when the act of recalling the information itself interferes with our ability to retrieve it. An example would be if trying to recall how to say 'hello' in French made it difficult for you to recall the language at all.

Proactive interference occurs when previously acquired information inhibits our ability to remember new information. An example would be if you have trouble learning Italian because it was very similar to French, which you had previously learned.

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