Research from Binghamton University suggests memory accuracy drops significantly by middle age, rather than only in older adulthood. Studying participants aged 18 to 74, researchers found that hippocampal function begins declining in a person’s 50s.

While younger adults made errors due to weak memory reactivation, older adults often experienced strong hippocampal reactivation that unexpectedly led to miscombining details, highlighting middle age as a key transition point.