marginally significantp = .050
For the N290 component, an exploratory 2 (condition: helping, hindering) × 2 (hemisphere: left, right) × 2 (age group: 6-month, 12-month) mixed ANOVA found a significant main effect of age group, F (1, 71)= 7.17, p = .009, η 2 = .09, and a marginally significant main effect of condition, F (1, 71)= 3.99, p = .050, η 2 = .05 (see Fig. 5 ).