“…Studies which simultaneously examined both directions of effect while controlling for children's prior level of outcomes, however, have often found different patterns of results. Some longitudinal studies demonstrated either a unidirectional association (i.e., from language to socioemotional outcomes or the other way around; Ertanir et al, 2021;Girard et al, 2017;Rose et al, 2016) or a bidirectional association between these two domains (Girard et al, 2014(Girard et al, , 2016Petersen et al, 2013), while some research could not provide evidence for a significant relation between them (e.g., Barnett et al, 2012). Notably, while children's language skills were mainly measured by vocabulary in those studies, children's socioemotional development has been assessed very differently across studies, for example, by children's positive behavior, socioemotional difficulties, or a compound indicator (i.e., aggregating various facets of socioemotional development).…”