Do Adult Brains Make New Neurons?

In 1928, Santiago Ramón y Cajal, the father of modern neuroscience, proclaimed that the brains of adult humans never make new neurons. “Once development was ended,” he wrote, “the founts of growth and regeneration … dried up irrevocably. In the adult centers the nerve paths are something fixed, ended and immutable. Everything must die, nothing…

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Vanishing time in the pursuit of happiness

Unlike other goals, pursuing happiness rarely leads to attaining happiness (Schooler, Ariely, & Loewenstein, 2003). Instead, seeking happiness more often, ironically, decreases happiness, in turn causing a previous act of seeking happiness to prompt continued behavior devoted toward the same objective (i.e., acts of seeking happiness). How might this happiness-seeking spiral shape one’s experience? We propose that the…

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