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Warped Sense of Time Heightens Temptations

Impulsivity arises from a tendency to want small imminent rewards more than big future benefits. How can we correct our skewed values to care for our future selves?

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Walk into any fast-food restaurant, and you can watch a small crowd of ordinary people doing something that is utterly irrational: eating junky, excess-weight-inviting food likely to leave them feeling bad about their bodies and open to a host of serious ills. We literally line up to trade our health and self-image for a few minutes of pleasant mouth feel and belly comfort—because the latter is right here, right now, whereas the former is months, years and decades away.

This foolish exchange reflects a glitch in our brains that may wreak more havoc in our lives and in society than any other. Known as temporal discounting, it is our tendency to view small rewards available now as more desirable than even much bigger payoffs down the road. Scientists think this trait may have been programmed into us by evolution at a time when the environment, with its many threats to our survival, favored those who grabbed whatever they could whenever they could get it.

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