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Table 2.

Summary of LBA Models Tested

Modulated Parameters in ModelkMedian BIC
Threshold, starting point, drift rate, drift noise 25 −546.16 
Threshold, starting point, drift rate 20 −575.52 
Threshold, starting point, drift noise 20 −75.84 
Threshold, drift rate, drift noise 20 −606.32 
Starting point, drift rate, drift noise 20 −606.47 
Threshold, starting point 15 −117.53 
Threshold, drift rate 15 −629.57 
Threshold, drift noise 15 −119.90 
Starting point, drift rate 15 −624.78 
Starting point, drift noise 15 −157.82 
Drift rate, drift noise 15 −629.92 
Threshold 10 −161.38 
Starting point 10 −107.24 
Drift rate 10 −646.62 
Drift noise 10 −172.87 
Null model −169.83 
Modulated Parameters in ModelkMedian BIC
Threshold, starting point, drift rate, drift noise 25 −546.16 
Threshold, starting point, drift rate 20 −575.52 
Threshold, starting point, drift noise 20 −75.84 
Threshold, drift rate, drift noise 20 −606.32 
Starting point, drift rate, drift noise 20 −606.47 
Threshold, starting point 15 −117.53 
Threshold, drift rate 15 −629.57 
Threshold, drift noise 15 −119.90 
Starting point, drift rate 15 −624.78 
Starting point, drift noise 15 −157.82 
Drift rate, drift noise 15 −629.92 
Threshold 10 −161.38 
Starting point 10 −107.24 
Drift rate 10 −646.62 
Drift noise 10 −172.87 
Null model −169.83 

The model marked in bold had the best fit to the data across participants. k = number of free parameters.

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