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Raw data. Plot of preference data (dots) and fit curves (lines) in the standard (blue) and random (red) versions of the task. Horizontal axis is the discount factor associated with preference indifference for each pair of options, and is defined as k = (v1 – v2)/(D1*v2 – D2*v1). Vertical axis indicates likelihood of choosing the LL option. Horizontal line indicates preference neutrality (P. = 0.5). A, B, and C refer to subjects C, H, and J, respectively.
