Table 1.

Simulation Conditions.

Simulation Parameters	Simulation Values
Simulating Models	MCSM, MLM
$a$, $b$, $c$	0, 0.36
$y$	0.36
X, M stabilitya	0.36, 0.50
Level-2 error variance	0, 0.0025, 0.01, 0.0225
Total variance of X, M, Yb	1

Note. MCSM, multilevel cross-sectional mediation; MLM, multilevel longitudinal mediation.

^aPath coefficients x and m were manipulated to keep X and M stabilities at their desired level. ^bLevel-1 error variance was manipulated to keep the total variance for each variable the same in every condition.