highly significantp < .001
As illustrated in Figure 3 , the analysis revealed a highly significant main effect of SES with a medium effect size, F (1,804) = 83.8, p < .001, η p 2 = .09 and time, F (1,804) = 36.8, p < .001, η p 2 = .05, but there was no significant effect of language group nor reliable interactions between language group, SES and time ( p > .05).