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. 2009 Mar 23;106(13):5025–5028. doi: 10.1073/pnas.0901490106

Fig. 1.

Fig. 1.

Diagram of the experimental design. Subjects were informed whether they were in the high- or the low-price condition for the next block of 5 trials. Subjects then saw a number of blue dots for 1.5 s. A number was then presented and subjects had to decide within 1.5 s whether the number of dots on the first screen had been lower or higher. After a response feedback and a short delay, an income screen informed subjects about their monetary reward for the trial.