Table 5:

Multilevel models to test hypothesis 3 and 4

	Episodic Memory			Executive Functioning			BTACT Composite
Predictors	Estimates	CI	p	Estimates	CI	p	Estimates	CI	p
Intercept (M2)	−0.41	−0.59 – −0.23	<0.001	−0.05	−0.18 – 0.08	0.450	−0.11	−0.23 – 0.01	0.085
MIDUS Wave	−0.13	−0.26 – 0.00	0.051	−0.43	−0.51 – −0.36	<0.001	−0.38	−0.45 – −0.31	<0.001
Exponent	0.26	−0.19 – 0.71	0.254	0.40	0.09 – 0.71	0.012	0.39	0.10 – 0.68	0.009
Sex	0.71	0.49 – 0.93	<0.001	0.08	−0.08 – 0.24	0.306	0.19	0.04 – 0.34	0.012
Education	0.17	0.04 – 0.30	0.008	0.13	0.04 – 0.21	0.003	0.13	0.05 – 0.21	0.002
Lag between Waves	−0.08	−0.19 – 0.04	0.187	−0.19	−0.28 – −0.11	<0.001	−0.18	−0.26 – −0.10	<0.001
Wave × Exponent	−0.02	−0.48 – 0.44	0.926	−0.21	−0.47 – 0.05	0.120	−0.16	−0.42 – 0.09	0.204
Random Effects
σ2	0.47			0.15			0.14
τ00	0.44 M2ID			0.28 M2ID			0.25 M2ID
ICC	0.48			0.65			0.65
N	234 M2ID			235 M2ID			234 M2ID
Observations	451			458			443
Marginal R2 / Conditional R2	0.136 / 0.551			0.179 / 0.710			0.182 / 0.710

Note: Repeated measured cognitive data nested within participant, indicated by M2ID. Sex coded as 0 = male, 1 = female. Education coded as −1 = high school or less, 0 = some college, 1 = Bachelor’s degree or higher. MIDUS Wave coded as 0 = MIDUS 2, 1 = MIDUS 3. Years between Waves (i.e., between MIDUS 2 and MIDUS 3 Cognitive Projects) and Age at M2 Neuroscience Project are mean centered. Empirical Bayes slope estimation used (Bates et al., 2015).