pAre human beings inherently generous or selfish? A new study finds that when people have to make the choice instantly, their first impulse is cooperation--which indicates that generosity is innate. Only when they have more time to consider their choice do they behave more selfishly. The research is in the journal Nature . [David G. Rand, Joshua D. Greene and Martin A. Nowak, Spontaneous giving and calculated greed ]/p a href=http://www.scientificamerican.com/podcast/episode.cfm?id=human-first-impulse-is-generosity-12-09-19[More]/a