Table 4:

Multilevel models to test hypothesis 1 and 2

	Episodic Memory			Executive Functioning			BTACT Composite
Predictors	Estimates	CI	p	Estimates	CI	p	Estimates	CI	p
Intercept (M2)	−0.43	−0.60 – −0.26	<0.001	−0.07	−0.19 – 0.05	0.256	−0.12	−0.23 – −0.01	0.028
MIDUS Wave	−0.13	−0.26 – −0.00	0.043	−0.43	−0.50 – −0.36	<0.001	−0.38	−0.45 – −0.31	<0.001
Age	−0.02	−0.03 – −0.01	0.001	−0.02	−0.03 – −0.02	<0.001	−0.02	−0.03 – −0.02	<0.001
Sex	0.74	0.53 – 0.94	<0.001	0.11	−0.03 – 0.26	0.128	0.22	0.08 – 0.35	0.001
Education	0.17	0.04 – 0.29	0.008	0.13	0.05 – 0.21	0.001	0.14	0.06 – 0.21	0.001
Lag between Waves	−0.10	−0.21 – 0.01	0.073	−0.21	−0.29 – −0.14	<0.001	−0.20	−0.27 – −0.13	<0.001
MIDUS Wave X Age	−0.01	−0.02 – 0.00	0.096	0.00	−0.01 – 0.01	0.994	−0.00	−0.01 – 0.01	0.707
Random Effects
σ2	0.46			0.16			0.14
τ00	0.38 M2ID			0.22 M2ID			0.19 M2ID
ICC	0.45			0.59			0.58
N	234 M2ID			235 M2ID			234 M2ID
Observations	451			458			443
Marginal R2 / Conditional R2	0.195 / 0.559			0.292 / 0.707			0.311 / 0.708

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).