HomePsychologyCognitive PsychologyWhat is Interference Theory?
Psychology·2 min·Updated Mar 13, 2026

What is Interference Theory?

Interference Theory

Quick Answer

Interference Theory explains how forgetting occurs when new information disrupts the recall of previously learned information. It highlights the competition between memories, showing that similar or overlapping information can interfere with each other.

Overview

Interference Theory is a concept in cognitive psychology that describes how memories can conflict with one another, causing difficulties in retrieval. It suggests that when new information is learned, it can interfere with the ability to remember older information, especially if the two sets of information are similar. This can happen in everyday situations, such as when a person learns a new phone number and struggles to recall their old number because the new one has taken precedence in their memory. There are two main types of interference: proactive and retroactive. Proactive interference occurs when old memories hinder the recall of new information, while retroactive interference happens when new information makes it harder to remember old information. For example, if someone learned to play a new song on the guitar, they might find it difficult to play an older song they already knew because the new song has interfered with their memory of the older one. Understanding Interference Theory is important because it helps psychologists and educators develop strategies to improve learning and memory retention. By recognizing how interference works, individuals can adopt techniques such as spaced repetition or varied practice to minimize the effects of interference and enhance their ability to store and retrieve information effectively.


Frequently Asked Questions

Interference in memory is caused by the overlap between similar pieces of information. When new information is learned that resembles previously stored information, it can create confusion, making it harder to recall either set of memories.
To reduce interference while studying, try to space out your learning sessions and focus on one topic at a time. This approach minimizes the chances of similar information competing for recall, helping to strengthen your memory.
While interference is often seen as a negative factor in memory recall, it can also play a role in memory consolidation. Sometimes, new experiences can help refine or update old memories, leading to a more accurate understanding of information.