One in Five Children Change Their Memories: What Happens to Recollections of Childhood Trauma?

A major new study by researchers at King's College London has found that memories of childhood maltreatment are generally more stable over time than commonly believed. However, the consistency of these memories depends on a person's age and the nature of the traumatic experiences.

The findings were published in the journal Nature Mental Health.

The study analyzed data from nearly 40,000 participants across 49 studies, with an average interval of approximately 2.5 years between assessments. Researchers examined reports of various forms of childhood adversity, including emotional, physical, and sexual abuse, as well as neglect.

Overall, the study found that reports of childhood abuse and maltreatment were more consistent over time than is often assumed, challenging the widespread belief that such memories are highly unreliable. The authors note that this finding has important implications for the legal system, social services, and clinical practice, where these accounts are frequently used as evidence or to inform decision-making.

At the same time, approximately one in five participants changed their reports of childhood experiences over time. The researchers emphasize that these changes should not be interpreted as false testimony. Instead, they may reflect the natural evolution of memory or changes in how individuals understand and interpret their past experiences as they mature.

Age emerged as a key factor influencing memory stability. Among adults, memories of childhood trauma remained relatively consistent even after long periods, whereas children's recollections were considerably less stable and were more likely to change over time. The researchers suggest this is because children's cognitive and memory systems are still developing, making early memories more susceptible to reinterpretation.

The study also found that memories of neglect were less stable than memories of specific incidents of abuse. According to the researchers, neglect is more difficult to encode as a distinct event and may be interpreted differently as children grow older.

The authors emphasize that the stability of trauma-related memories is influenced by multiple factors, including age, the type of trauma experienced, and the context in which individuals report their experiences.

The researchers further suggest that childhood may represent a period during which trauma memories are especially vulnerable to change, potentially creating a "window of opportunity" for early therapeutic intervention. In their view, timely support may improve long-term psychological outcomes before traumatic experiences become fully integrated into an individual's developing sense of self.

Follow NEWS.am Medicine on Facebook and Twitter