. Author manuscript; available in PMC: 2016 Apr 27.

Published in final edited form as: Decision (Wash D C ). 2015 Apr 27;2015:10.1037/dec0000030. doi: 10.1037/dec0000030

Table 4. Correlations between model parameters for fits to small numbers of trials with model parameters from fits to all the trials.

Task	Trial block	a	T_er	v₁	v₂	v₃	v₄
Numerosity	1-80	0.278	0.675	0.247	0.292
	81-160	0.735	0.578	0.304	0.304
	161-240	0.687	0.532	0.260	0.306
	1-160	0.617	0.718	0.377	0.404
	161-320	0.773	0.628	0.546	0.438
	1-320	0.733	0.783	0.538	0.467
	321-640	0.877	0.852	0.725	0.543
Lexical Decision	1-120	0.704	0.515	0.357	0.526	0.474	0.467
	121-240	0.715	0.487	0.347	0.568	0.476	0.497
	241-360	0.809	0.670	0.359	0.584	0.654	0.447
	1-240	0.795	0.597	0.424	0.625	0.611	0.438
	241-480	0.871	0.760	0.363	0.609	0.731	0.394
	1-480	0.860	0.777	0.525	0.711	0.730	0.485
	481-960	0.889	0.802	0.408	0.722	0.844	0.473

Note: v₁=v_E and v₂=v_D for numerosity (v_E and v_D are the drift rates for the easy and difficult conditions respectively), and v₁=v_H, v₂=v_L, v₃=v_V, and v₄=v_N for lexical decision (v_H, v_L, v_V, and v_N are the drift rates for high, low, and very low frequency words and for nonwords respectively). a is boundary separation and T_er is nondecision component of response time.