Taken at face value, these results suggest Japanese learn wisdom faster than Americans. One up, then, to the wizened Zen-masters. But they also suggest a paradox. Generally, America is seen as an individualistic society, whereas Japan is quite collectivist. Yet Japanese have higher scores than Americans for the sort of interpersonal wisdom you might think would be useful in an individualistic society. Americans, by contrast—at least in the maturity of old age—have more intergroup wisdom than the purportedly collectivist Japanese. Perhaps, then, you need individual skills when society is collective, and social ones when it is individualistic. All of which goes to show that the real root of wisdom is this: do not assume, little grasshopper, that your prejudices are correct.

via Age and wisdom: Older and wiser? | The Economist.