Table 2.

Means, Standard Deviations, and Sample Sizes across Measurement Waves

	Wave 1	Wave 2	Wave 3
	M (SD)	M (SD)	M (SD)
Outcome Variables
General Well-Being	3.71 (0.91)	3.65 (0.94)	3.71 (0.91)
Relational Strain	1.97 (0.67)	1.92 (0.65)	1.90 (0.65)
Relational Support	3.50 (0.60)	3.51 (0.61)	3.51 (0.62)
Predictors
Extraversion	3.20 (0.56)	–	–
Neuroticism	2.06 (0.61)	–	–
Agreeableness	3.51 (0.49)	–	–
Conscientiousness	3.36 (0.48)	–	–
Openness	2.94 (0.55)	–	–
Age (years)	66.72 (9.47)	–	–
Marriage Length (years)	37.15 (16.06)	–	–
Years of Education	12.79 (3.06)	–	–
	N	N	N
Number of Individuals	8,928	7,652	3,529

Note. Predictors were only measured at Wave 1. Wave 1 and Wave 2 were assessed for both cohorts, and Wave 3 was only assessed for Cohort 1.