>> it's hard to believe, but these little babies are helping to answer one of life's biggest questions -- is are we born knowing right from wrong? >> a lot of activity. >> reporter: researchers here at the cognition center they believe that humans are born with an innate sense of moshl believes, which means babies don't need to be taught the difference between right and wrong. they are born already knowing it. we watched babies as young as 3 months old as they were presented with a puppet show. here a puppet struggles to open a box. we see a green bunny that helps to open the box. good behavior, good bunny. then an orange bunny slams the box shut and run away. bad behavior,bunny. when given a choice between the two, 80% of babies chose the kbood bunny.