Why the Bank Shows You Your Face in Old Age

When you think about yourself 30 years from now, the same brain regions become active as when you think about a stranger. At this level, the difference between "me now" and "me later" is almost the same as the difference between "me" and "someone else."

That explains the never-ending challenge of saving. Setting money aside means giving it to someone you can barely picture and don't feel much empathy for. Spending it today means treating the present you, familiar and easy to understand, to something nice.

Participants were shown a photo of themselves aged by software and briefly interacted with the image in a virtual environment. Then they were asked a familiar question: how to divide a hypothetical sum between current spending and savings.

Those who saw the aged face saved noticeably more than those who saw their unaged face. The effect came not from persuasion or calculations, but from the abstract figure in the future suddenly having a face.

The approach has spread to financial apps: some show an aged portrait or describe a day in 30 years in detail. One important caveat: the experiments were small, the effect was measured immediately after the image was shown, and long-term effects have barely been studied.

The same mechanism explains procrastination in general. The task for next week gets handed to your future self, who seems energetic, free, and strong. As the deadline approaches, it becomes clearer that she is the same person, facing the same circumstances.