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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Cognition. 2011 Apr 2;120(1):90–105. doi: 10.1016/j.cognition.2011.02.016

Figure 1.

Figure 1

The task from Experiment 1. Monkeys initially were presented with only a covered sample (gray square at top center) and the two information-revealing response options (rectangles at left and right in Panels A and B). The left rectangle (Panel A)—the Reveal Sample response option—disappeared when contacted by the cursor (the dot at center of screen) and revealed the sample image as shown at top right. The right rectangle (panel B)—the Reveal Comparisons response option—disappeared when contacted by the cursor, cleared the screen for 1 s as shown at bottom left, and then revealed the comparison stimuli as shown at bottom right. With the comparison stimuli revealed, the monkey chose one, with the goal to match the sample that had been shown.