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. Author manuscript; available in PMC: 2012 Mar 24.
Published in final edited form as: Neuron. 2011 Mar 24;69(6):1204–1215. doi: 10.1016/j.neuron.2011.02.027

Table 1.

Best-fitting parameter estimates, shown as median + quartiles across subjects. Also shown are medians and quartiles for the negative log-likelihood (−LL) of the data at the best fitting parameters, and a pseudo-r2 statistic (p-r2), a normalized measure of the degree to which the model explained the choice data.

β1 β2 α1 α2 λ p w −LL p-r2
25th pctile 2.76 2.69 0.46 0.21 0.41 0.02 0.29 167.74 .17
median 5.19 3.69 0.54 0.42 0.57 0.11 0.39 200.55 .26
75th pctile 7.45 5.16 0.87 0.71 0.94 0.22 0.59 228.22 .40