What Is the Misinformation Effect with Examples

Everyone · Explainer · Updated October 1, 2026 · LearnLife Editorial

Short answer

The misinformation effect occurs when a person’s memory of an event changes because they encounter misleading or incorrect information afterward. For instance, if someone sees a green car in an accident but later hears it was red, their memory may shift to recall a red car, blending false details into their original experience.

What is the misinformation effect?

The misinformation effect is a memory phenomenon where exposure to incorrect information after an event changes how a person remembers that event. Memories are not like videos stored perfectly; instead, they get reconstructed each time you recall them. When false or misleading details are introduced after the fact, these can merge with your original memory, causing you to remember events differently from how they actually happened.

For example, if you witnessed a street scene where a man wore a blue jacket, but later someone tells you the jacket was black, your memory might slowly change until you recall the black jacket instead. This effect highlights how memory is flexible and influenced by external information.

Understanding this is crucial because it explains why eyewitness accounts can be unreliable, why rumors can alter how we remember news, and why we should be cautious about accepting new information without verification.

How does the misinformation effect work?

The misinformation effect happens in several stages:

Experience an event: You form a memory based on what you saw, heard, or felt during the event.
Encounter misleading information: After the event, you hear or read false or incorrect details related to it. This might come from conversations, news articles, or social media.
Memory blending: When recalling the event later, your brain unintentionally combines the original memory with the misleading information. This creates a new, altered memory.
Altered recollection: You remember the event differently, often without realizing the changes.

Example in detail:

Imagine you witness a minor car crash involving a green sedan. You notice the make and license plate. Days later, you discuss the accident with a friend, who says, “I saw it was a blue pickup truck with a plate starting with ‘Z.’” The next time police ask you about the accident, your memory may now include the blue pickup and the plate starting with ‘Z,’ even though your original observation was different. This happens because the misleading information altered your memory during the conversation.

This example shows how innocent conversations or secondhand information can unintentionally distort memories.

Why does the misinformation effect matter to you?

The misinformation effect affects everyday life in several important ways:

Legal settings: Eyewitness memories are often relied upon in courts. If memories have been distorted by misinformation, it can lead to wrongful convictions or acquittals. Attorneys and judges are aware of this risk and may examine how memories were formed and influenced.
News and social media: False or misleading information spreads quickly online. If you read misleading headlines or posts, your memories of events may shift, affecting your opinions and decisions.
Personal relationships: Different people may remember shared events differently due to misinformation, which can cause misunderstandings or disputes. For example, a family story retold with incorrect details can change how everyone recalls that event.
Daily decisions: If your memory changes, you might misremember instructions, appointments, or important details, leading to mistakes.

Recognizing the misinformation effect makes you more careful about what you believe and share, helping you maintain clearer memories and make better decisions.

What terms are often confused with the misinformation effect?

Here is a comparison of related concepts that people sometimes mix up:

Term	Meaning	Difference from misinformation effect
Misinformation	False or inaccurate information shared without harmful intent.	Misinformation effect is about how such info changes memory, not just the false info itself.
Disinformation	False information deliberately created and shared to deceive or manipulate.	Disinformation focuses on intent; misinformation effect is about memory distortion regardless of intent.
Memory bias	General distortions in memory caused by personal beliefs or emotions.	Memory bias is broader; misinformation effect specifically involves external false information reshaping memory.
Confirmation bias	The tendency to favor information that confirms existing beliefs or opinions.	Confirmation bias influences which info you accept; misinformation effect changes what you remember.

For example, you might read false details about an event (misinformation) and later your memory changes (misinformation effect). If someone purposefully spreads lies to trick you, that is disinformation. These terms describe different aspects of how false information influences beliefs and memories.

How can you protect yourself from the misinformation effect?

To reduce the risk of your memories being distorted, follow these practical steps:

Write down important details quickly: After an event or receiving important information, jot down what you observed or experienced. For example, if you witness an incident, note the time, place, and key facts. This provides a reference to compare against later.
Check facts with reliable sources: Before accepting or sharing information, verify it through trusted, credible sources such as official reports or reputable news outlets. Avoid relying on a single source or unverified social media posts.
Ask focused questions: When discussing events with others, ask clear questions like “What did you see exactly?” or “Where did you get that information?” This can help clarify details and reduce confusion.
Pause before recalling: When remembering an event, take a moment to separate what you experienced from what you’ve heard afterward. Mentally review your original observation before considering new information.
Limit exposure to misleading content on social media: Follow verified accounts, be skeptical of sensational posts, and use fact-checking tools before sharing content.
Learn about memory’s limitations: Knowing that memory is reconstructive and prone to error encourages critical thinking and humility about how confident you should be in your recall.

Applying these strategies helps protect your memories from mixing with false information and supports better judgment.

What should you do if you think your memory has been influenced by misinformation?

If you suspect your memory might be inaccurate due to misleading information, here’s what to do:

Review original evidence: Look for photos, videos, documents, or other reliable sources from the event to compare with your memory. For example, if you saw an accident, check if there are surveillance videos or police reports.
Talk to neutral witnesses: Discuss the event with people who experienced it but were not involved in spreading misinformation to get their independent accounts.
Accept memory imperfections: Understand that having mistaken memories is common and does not mean you are careless or dishonest. Being open to correction helps.
Avoid insisting on absolute accuracy: If evidence contradicts your memory, be willing to consider the new information rather than defending a possibly false recollection.
Seek professional help if needed: In legal cases, talk with a lawyer about your concerns. If false memories cause emotional distress, see a counselor or trusted adult.
Report misinformation: If you find false information spreading online or in your community, report it to relevant platforms or authorities to help limit harm.

Taking these steps can clarify the truth, protect your well-being, and reduce the impact of misinformation.

Building knowledge about misinformation and memory helps you stay informed and vigilant:

Explore psychological explanations in What Is the Misinformation Effect in Psychology? to understand how memory works and why it is vulnerable.
Learn how misinformation spreads in media with Media Literacy Explained: Understanding Misinformation.
Differentiate types of false information in Examples of Misinformation, Disinformation, and Malinformation.
Use fact-checking guides and trusted resources to verify information before accepting or sharing it.
Read about how social media impacts information accuracy in Misinformation on Social Media and Its Impact.

Regularly updating your understanding helps you guard against memory errors and misinformation’s influence in everyday life.

Frequently asked questions

How quickly can misinformation change a memory?

Memory changes can happen after just one exposure to false information, especially if the new details are repeated or come from a trusted source. The longer after the event, the more vulnerable memory becomes to alteration.

Are some people more vulnerable to the misinformation effect?

Yes, children, older adults, and people under stress or distraction tend to be more susceptible because their memory processes may be less stable or focused.

Can the misinformation effect affect memories about personal experiences?

Absolutely. Even personal memories like conversations, events with friends, or family gatherings can be changed by hearing incorrect details afterward.

How can I tell if my memory has been influenced by misinformation?

Signs include feeling uncertain, noticing contradictions with others’ accounts, or recalling details that you later find were incorrect. Comparing your memory with evidence or neutral witnesses can help.

Does correcting misinformation always restore the original memory?

Not always. Sometimes false details remain strongly embedded and continue to influence memory, even after correction. Repeated exposure to accurate information can help, but full restoration is not guaranteed.