. Author manuscript; available in PMC: 2021 Sep 1.

Published in final edited form as: Psychol Aging. 2020 Jul 27;35(6):850–865. doi: 10.1037/pag0000562

Table A3.

Means and standard deviations in drift rates across participant groups for fits of the diffusion model to the task-switch paradigm (for the model in the main text).

Group	Task	v₁	v₂	v₃	v₄	v₅	v₆
		Mean
college students	Brightness	.217	.177	.146	.213	.179	.149
college students	Letter	.307	.230	.216	.295	.224	.220
61–74 year olds	Brightness	.178	.138	.105	.190	.135	.110
61–74 year olds	Letter	.339	.246	.207	.328	.234	.212
75–89 year olds	Brightness	.176	.118	.082	.168	.115	.094
75–89 year olds	Letter	.315	.202	.187	.307	.222	.182
		Standard deviation
college students	Brightness	0.070	0.060	0.052	0.081	0.067	0.046
college students	Letter	0.076	0.053	0.058	0.062	0.057	0.059
61–74 year olds	Brightness	0.084	0.057	0.047	0.078	0.062	0.051
61–74 year olds	Letter	0.098	0.068	0.064	0.083	0.061	0.056
75–89 year olds	Brightness	0.071	0.063	0.059	0.073	0.057	0.062
75–89 year olds	Letter	0.102	0.085	0.071	0.096	0.071	0.059f

Note. Model with one boundary separation for pure and mixed blocks. v₁ = drift rate for pure trials with short RSI; v₂ = drift rate for no-switch trials with short RSI; v₃ = drift rate for switch trials with short RSI; v₄ = drift rate for pure trials with long RSI; v₅ = drift rate for no-switch trials with long RSI; v₆ = drift rate for switch trials with long RSI.