Stanford psychologist Laura Carstensen found that when older adults were asked to imagine a medical breakthrough adding decades to their lives, their preferences shifted back toward those of younger people — suggesting that the emotional calm of old age may come less from age itself than from the way a shrinking time horizon changes what people value.

Carstensen's socioemotional selectivity theory suggests that perceived future time, not age alone, helps shape social preferences and emotional priorities in later life. The post Stanford psychologist Laura Carstensen found that when older adults were asked to imagine a medical breakthrough adding decades to their lives, their preferences shifted back toward those of younger people — suggesting that the emotional calm of old age may come less from age itself than from the way a shrinking time ho