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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Trends Cogn Sci. 2010 Jan 27;14(3):110–118. doi: 10.1016/j.tics.2009.12.006

Figure 1.

Figure 1

Can 15-month-olds attribute to an agent a false belief about an object's location? In the false-belief-green and false-belief-yellow conditions of Onishi and Baillargeon [16], the infants first received three familiarization trials. In trial 1, a toy stood between a yellow and a green box; a female agent entered the apparatus, played with the toy briefly, hid it inside the green box, and then paused, with her hand inside the green box, until the trial ended. In trials 2 and 3, the agent reached inside the green box, as though to grasp her toy, and then paused. In the belief-induction trial, the toy either moved from the green to the yellow box in the agent's absence (false-belief-green condition) or moved to the yellow box in the agent's presence but then returned to the green box after she left (false-belief-yellow condition). In the test trial, the agent returned, reached inside either the yellow box (yellow-box event) or the green box (green-box event), and then paused.