Table 4. Effect of MOT on Ravens when mediated by WM composite, controlling for age-related main effects.

Effect	Estimate	HDI 2.5%	HDI 97.5%
Direct effect	0.55	-0.86	1.97
Indirect effect	9.27	4.68	13.90
Proportion mediated	0.94	0.79	1.10

HDI indicates Highest Density Interval quantiles. Direct effect indicates the remaining effect of MOT after accounting for the mediation of WM composite. Indirect effect indicates the strength of the mediation. Proportion mediated indicates the amount of the MOT effect explained by the mediation.