You’re a different person at 14 and 77, the longest-running personality study ever has found

Look at a photo of yourself as a teenager and, mistaken fashion choices aside, it’s likely you see traces of the same person with the same personality quirks as you are today. But whether or not you truly are the same person over a lifetime—and what that notion of personhood even means—is the subject of ongoing philosophical and psychology debate. The longest personality study of all time, published in Psychology and Aging and recently highlighted by the British Psychological Society, suggests that over the course of a lifetime...

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