There are different theories why the misinformation effect happens, potentially leading to false memories.

1. The original facts and information after the fact get blended together in a person's memory.
2. Misleading information replaces the original memory.
3. Since misleading information is more recent, it's easier to retrieve.
4. The original details may not have been encoded into memory. Misleading information is then mixed into the mental narrative to fill the memory gaps.

Factors that make it more likely that event happenings will be distorted and lead to false memories:

• Discussing the event with other witnesses. Conflicting reports might reshape or distort a witness's original memory of the event.
• Reading or watching news reports. People often forget the original source of information and believe they observed something personally when they really heard it in a news report.
• Repeated exposure to misinformation.
• The passage of time.

• One strategy is to write down your memory of an important event immediately after it happens. Keep in mind that subtle errors can still slip in and further cement them in your memory.
• Another is to be aware that your memory can be influenced and that everyone is susceptible to the misinformation effect.

If everyone is saying the same thing and it is different to what you remember, the misinformation effect may be at play.