Table 3.

Diffusion model drift rate coefficients and individual fit measures

Experiment and task	Model	v1	v2	v3	v4	vc	Number preferred	Number slopes<0	G2	df
1, B/Y	linear	0.037	0.016				13/16	28/32	261	212
1, B/Y	log	0.501	0.225				3/16		287	212
2, L/R	linear	0.066	0.048				6/16	11/32	303	212
2, L/R	log	1.067	0.784				10/16		280	212
3, Y25	linear	0.033	0.033	0.029	0.030	−0.004	13/16		301	252
3, Y25	log	0.634	0.629	0.581	0.571	−0.029	3/16		312	252
4, B/Y	linear	0.030	0.016	0.040	0.020		11/16	56/64	475	430
4, B/Y	log	0.436	0.229	0.566	0.268		5/16		494	430
5, Y25	linear	0.032	0.030	0.037	0.035	−0.032	12/16		328	252
5, Y25	log	0.559	0.531	0.643	0.592	−0.050	4/16		348	252
6, Y25	linear	0.033				−0.045	15/35		95	57
6, Y25	log	0.607				−0.071	20/35		98	57
6, B/Y	linear	0.015					21/35	32/35	136	103
6, B/Y	log	0.275					14/35		138	103
7, B/Y	linear	0.040	0.025				24/32		90.6	58
7, B/Y	log	0.534	0.321				8/32		95.0	58
7, X/O	linear	0.031					16/32		43.2	26
7, X/O	log	0.386					16/32		42.6	26
8, asterisks	linear	0.015					24/32		41.2	37
8, asterisks	log	0.557					8/32		41.7	37
8, X/O	linear	0.029					24/32		45.4	37
8, X/O	log	0.355					8/32		47.6	37
10, Y25	linear	0.035	0.033	0.036	0.036	−0.041	10/15		338	252
10, Y25	log	0.627	0.608	0.638	0.628	−0.069	5/15		342	252

Note: For Experiments 1, 2, and 7, v₁ proportional area, v₂ equal area. For Experiments 3 and 5, v₁ small dots few distrac-tors, v₂ small dots many distractors, v₃ large dots few distractors, v₄ large dots many distractors. For Experiment 4, v₁ small dots proportional area, v₂ small dots equal area, v₃ large dots proportional area, v₄ large dots equal area. For Experiment 10, v₁ random arrangement proportional area, v₂ random arrangement equal area, v₃ grid arrangement proportional area, v₄ grid arrangement equal area.