[Source: Science Daily]

Children as young as three years old are willing to punish others’ bad behavior, even at personal cost, finds a new study by psychology researchers at New York University. The work adds to growing evidence that human beings distinguish between right and wrong at a very young age and are willing to pay a personal cost to encourage positive behavior in others.

“Morality is about more than just doing good oneself — it is also about encouraging good behavior in others,” says lead author Daniel Yudkin, a postdoctoral researcher at Yale University and an NYU doctoral student at the time of the study, which appears in the Journal of Experimental Psychology. “These results highlight a distinctly human aspect of moral behavior.”

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