Skip to Main Content
Table 3. 

DDM Parameters from the Best-Fitting Model

a. Constant DDM Parameter Estimates (Posterior Std)
Parameter


Mean

Boundary separation (a   1.7 (0.09)  
Bias (z   0.54 (0.02)  
Intertrial variance in non-decision time (st   0.01 (0.0)  
Intertrial variance in drift rate (sv   0.008 (0.04)  
Intertrial variance in bias (sz   0.35 (0.03)  
 
b. DDM Parameter Estimates (Posterior Std) that Vary by Condition 
SOA Rule Block Neutral Block 
Expected Unexpected Nonword Word Nonword 
Short 
 Drift rate (v2.8 (1.2) 2.6 (1.1) −3.1 (1.2) 3.8 (1.2) −3.8 (1.2) 
 Non-decision time (t0.464 (0.025) 0.440 (0.023) 0.496 (0.026) 0.417 (0.022) 0.441 (0.024) 
Long 
 Drift rate (v2.8 (1.2) 2.2 (1.2) −3.5 (1.1) 3.6 (1.1) −3.8 (1.1) 
 Non-decision time (t0.373 (0.020) 0.441 (0.025) 0.433 (0.023) 0.383 (0.020) 0.414 (0.023) 
a. Constant DDM Parameter Estimates (Posterior Std)
Parameter


Mean

Boundary separation (a   1.7 (0.09)  
Bias (z   0.54 (0.02)  
Intertrial variance in non-decision time (st   0.01 (0.0)  
Intertrial variance in drift rate (sv   0.008 (0.04)  
Intertrial variance in bias (sz   0.35 (0.03)  
 
b. DDM Parameter Estimates (Posterior Std) that Vary by Condition 
SOA Rule Block Neutral Block 
Expected Unexpected Nonword Word Nonword 
Short 
 Drift rate (v2.8 (1.2) 2.6 (1.1) −3.1 (1.2) 3.8 (1.2) −3.8 (1.2) 
 Non-decision time (t0.464 (0.025) 0.440 (0.023) 0.496 (0.026) 0.417 (0.022) 0.441 (0.024) 
Long 
 Drift rate (v2.8 (1.2) 2.2 (1.2) −3.5 (1.1) 3.6 (1.1) −3.8 (1.1) 
 Non-decision time (t0.373 (0.020) 0.441 (0.025) 0.433 (0.023) 0.383 (0.020) 0.414 (0.023) 
Close Modal

or Create an Account

Close Modal
Close Modal