“The findings, which were published in the journal Cognition, reveal how 4- and 5-year-olds approach games methodically.
They were given a specially designed toy “that lit up and played music when the child placed certain beads on it,” says Nature. The cognitive scientists found that, when the children didn’t know which beads would activate the toy — namely they had been given what the team defined as “ambiguous evidence” — they tested each variable in turn.” via Wired
