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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Psychol Sci. 2014 Jun 27;25(9):1712–1721. doi: 10.1177/0956797614538458

Figure 1.

Figure 1

(a) Children first made a judgment on either number or emotion stimuli. A black box appeared around their selection, and the bet icons appeared below while the stimuli remained on the screen. Children then made a confidence judgment by wagering on their discrimination accuracy. A smiley icon indicated a high bet (high confidence) and a squiggle icon indicated a low bet (low confidence). Children then gained or lost tokens in the bank based on their accuracy and bet selection. (b) Examples of number and emotion stimuli at each difficulty level.