Why Do We Lose Our Earliest Memories as We Grow Into Adulthood?
In short: Most adults cannot recall events from before the age of 3 or 4, a phenomenon known as infantile amnesia. While early theories blamed psychological repression or a lack of language skills, modern research suggests the answer lies in the biological development of the brain and the rapid turnover of hippocampal cells.
The inability to recall our earliest years, including birth, is a well-documented gap in human experience. Sigmund Freud famously labeled this phenomenon childhood or infantile amnesia, theorizing that we suppress these memories due to their traumatic or inappropriate nature. However, contemporary scientists have largely moved away from this psychoanalytic view, favoring explanations rooted in neurobiology. One long-standing hypothesis suggested that episodic memory—the ability to recall specific past events—required language development. This theory faltered when researchers observed that mice also exhibit infantile amnesia, indicating that the mechanism is not uniquely human but shared across species.
Current research focuses on the brain's physical architecture. While infant brains are less efficient at encoding memories, likely due to the immaturity of the prefrontal cortex, they are not entirely incapable of forming them. Studies led by Patricia Bauer and Marina Larkina at Emory University suggest that early memories are formed but eventually become inaccessible. In their research, children aged 3 described specific events, such as theme park visits. When followed up years later, these children recalled over 60 percent of the events at ages 5, 6, and 7, but that retention dropped to under 40 percent by ages 8 and 9, effectively capturing the onset of amnesia.
A compelling biological explanation involves neurogenesis in the hippocampus, the brain region essential for storing episodic memories. Neuroscientists Sheena Josselyn and Paul Frankland propose that the rapid creation of new neurons in the young hippocampus may disrupt existing memory circuits. Essentially, as the brain grows and rewires itself during early development, these new cells may overwrite or block access to earlier stored information. This suggests that the very process of brain maturation and growth is what forces us to lose our earliest life experiences, turning our first years into a permanent, unreachable blank.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: Why Can't People Remember Being Born?
To cite this card, link to https://intellectplus.co.uk/app/ideas-why-can-t-people-remember-being-born.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
