Table 3.

Best-fitting model for acoustic, lexical, and multitasking demands on logRTs.

Fixed effects	logRTs
	Estimate	SE	t	p
Intercept	5.33	0.06	89.83	< .001
SecondTask (Complex > Simple)	0.85	0.05	15.67	< .001
SNR (Harder > Easier)	0.04	0.03	1.40	.16
LogWdFreq (mean centered)	0.01	0.01	1.38	.17
SecondTask:SNR	−0.02	0.04	−0.48	.63
SecondTask:LogWdFreq	−0.03	0.01	−2.09	.04
SNR:LogWdFreq	−0.04	0.01	−2.57	.01
SecondTask:SNR:LogWdFreq	0.04	0.02	2.10	.04
Random Effects	Variance	SD	Correlation
By-Word Intercepts	< 0.01	0.05
By-Participant Intercepts	0.08	0.29
By-Participant SecondTask Slopes	0.06	0.25	−.87
Residual	0.10	0.32
Model fit	Marginal	Conditional
Pseudo-R2	0.53	0.69

Note. logRTs = log-transformed reaction times; SE = standard error; SNR = signal-to-noise ratio.