Exploring the Resilience of Human Memory Against False Memories

Student summary by Hayden Byun

Original Source:Published April 8, 2025 in Scientific American by BERNICE ANDREWS & CHRIS R. BREWIN EDITED BY DAISY YUHAS & MADHUSREE MUKERJEE

  Image created by Hayden Byun

Abstract

Background: Studies in the past have shown that human memory is imperfect. The idea of a “false memory” could be problematic in countless ways. In one experiment done in 1995, two psychologists misled 24 participants by asking them if they remembered a childhood event that never truly happened. Twenty-five percent of them claimed to have a false memory of this, either partially or fully. Over time, people have started to question the reliability of the results of this experiment.

Objective: In a paper published in 2017, two questions remained from this study: “How confident could we be in the experimenters’ false memory judgments?” and “What exactly was it that the participants remembered?” In 2023, another psychologist named Gillian Murphy and her colleagues wanted to closely replicate the previous study from 1995 in an attempt to get a more reliable answer.

Method: This new experiment was designed to be very similar to the original study, but this time they had a sample of 123 people instead of 24. They used the same method as the previous experiment.

Results: The results of this new experiment proved a new point. Although 35% of the group showed signs of having a false memory, only 14% directly stated that they had a memory of the made-up event. Even more unexpectedly, participants who claimed to have a full false memory only remembered half of the details. They also discovered that many of the participants who had recalled the fake event had a similar experience in reality, though not exactly the same.

Conclusion: This recent study proved that false memories are harder to implant than previously believed. It has now been made clear that despite the fact that memory can sometimes be inaccurate, it is unlikely for a complete false memory to be implanted. This assures people in the present and the future that their memories can be trusted.