Table 2.

Outcome of the linear mixed effect models for the linguistic noun-verb switching task in Experiment 1.

Fixed effects	Estimate	Standard error	t-value	p value
Switching analysis
Intercept	7.206	0.019	383.598	< 0.001
Switching	0.043	0.008	5.191	< 0.001
Rule	− 0.032	0.019	− 1.702	0.103
Age group	0.051	0.032	1.579	0.118
Switching × Age group	− 0.014	0.01	− 1.462	0.148
Switching × Rule	0.002	0.019	0.084	0.934
Age group × Rule	− 0.012	0.015	− 0.786	0.435
Switching × Age group × Rule	− 0.01	0.021	− 0.481	0.635
Mixing analysis
Intercept	7.074	0.018	388.526	< 0.001
Mixing	0.22	0.012	17.754	< 0.001
Rule	0.011	0.018	0.6	0.554
Age group	0.071	0.031	2.312	0.023
Mixing × Age group	− 0.024	0.021	− 1.112	0.27
Mixing × Rule	− 0.086	0.015	− 5.781	< 0.001
Age group × Rule	0.008	0.017	0.444	0.659
Mixing × Age group × Rule	− 0.025	0.024	− 1.041	0.305

The final model for the switching analysis included by-subject and by-item random intercepts, as well as all by-subject random slopes and all by-item slopes apart from age × switching. The final mixing model included all intercepts and slopes, after removal of correlations.