. 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 5. Correlations between parameters used to generate simulated data and recovered parameters for 8 fitting methods and three sets of numbers of observations for the numerosity discrimination design.

		N=1000, 1000				N=100, 100				N=40, 40
	Method	a	T_er	v₁	v₂	a	T_er	v₁	v₂	a	T_er	v₁	v₂
0% contaminants	HDDM	0.991	0.972	0.952	0.960	0.782	0.877	0.356	0.571	0.426	0.791	-0.129	0.154
	Fast-dm	0.971	0.971	0.932	0.926	0.893	0.910	0.843	0.774	0.878	0.851	0.573	0.605
	DMATout	0.913	0.888	0.810	0.921	0.755	0.808	0.265	0.591	0.493	0.719	-0.041	0.366
	DMATno	0.980	0.957	0.902	0.916	0.798	0.854	0.586	0.651	0.379	0.650	0.091	0.337
	MLH	0.987	0.977	0.937	0.894	0.954	0.923	0.835	0.647	0.923	0.890	0.743	0.665
	Chi9q	0.982	0.961	0.908	0.934	0.943	0.942	0.829	0.743	0.899	0.852	0.668	0.643
	Chi5q	0.979	0.961	0.921	0.951	0.948	0.917	0.822	0.746	0.899	0.871	0.650	0.636
	EZ	0.976	0.928	0.926	0.929	0.896	0.804	0.866	0.798	0.821	0.745	0.741	0.670
4% contaminants	HDDM	0.667	0.939	0.602	0.752	-0.126	0.880	0.181	0.360	0.478	0.790	0.089	0.332
	Fast-dm	0.946	0.968	0.786	0.838	0.876	0.859	0.783	0.684	0.873	0.847	0.629	0.546
	DMATout	0.930	0.930	0.674	0.838	0.525	0.771	0.221	0.494	0.352	0.666	-0.026	0.471
	DMATno	0.862	0.941	0.649	0.745	0.619	0.765	0.597	0.626	0.333	0.626	0.115	0.405
	MLH	0.975	0.975	0.844	0.830	0.894	0.872	0.755	0.636	0.763	0.862	0.599	0.613
	Chi9q	0.987	0.963	0.910	0.932	0.941	0.935	0.848	0.765	0.867	0.866	0.629	0.516
	Chi5q	0.967	0.938	0.854	0.903	0.930	0.907	0.807	0.786	0.835	0.858	0.691	0.594
	EZ	0.804	0.760	0.766	0.849	0.675	0.640	0.814	0.778	0.643	0.575	0.611	0.623

Note: DMATout was the DMAT method with contaminant correction, DMATno was the DMAT method with no contaminant correction, MLH was the maximum likelihood method, chi9q and chi5q were the chi-square methods with 9 and 5 quantiles respecitvely. a is boundary separation, T_er is nondecision component of response time, v₁ and v₂ are the drift rates for the easy and difficult conditions respectively.