Table 6

Model summary of the hierarchical multiple regression for variables (including the ERPs, age group, and interaction) predicting working memory

Stage one
WM ∼ ERPs		Stage two WM ∼ ERPs
+ age group		Stage three WM ∼ ERPs + age
group + interaction
Within measurement pointsERPs1
WM1		R2 change
F change		0.18
F(5,72) = 3.25
p = 0.011		0.10
F(2,70) = 4.97
p = 0.010		0.07
F(10,60) = 0.65
p = 0.768
ERPs2
WM2		R2 change
F change		0.25
F(5,72) = 4.71
p = 0.001		0.18
F(2,70) = 10.60
p < 0.001		0.05
F(10,60) = 0.51
p = 0.879
Across measurement pointsERPs1
WM2		R2 change
F change		0.32
F(5,72) = 6.90
p < 0.001		0.15
F(2,70) = 10.20
p < 0.001		0.06
F(10,60) = 0.73
p = 0.698
ERPs2
WM1		R2 change
F change		0.10
F(5,72) = 1.51
p = 0.198		0.14
F(2,70) = 6.44
p = 0.003		0.08
F(10,60) = 0.67
p = 0.746