Although there were four options (balloons) on a given trial, feedback was rigged to have the probability of 50% reward and 50% non-reward outcomes across the task. Feedback was random, meaning that there was no pattern of certain balloons predicting specific outcomes, but children were led to believe that some people “can figure out a pattern some of the time.” Participants were reminded to look at the screen and not at their hands, as they would in video game play (to reduce eye-movement artifact).
