This meta-analysis of 17 studies with 745 children between the ages of 4 and 12 found that children with SLI had substantially lower ToM performance compared to age-matched typically developing children (d = .98). This effect size was not moderated by age and gender. By revealing that children with SLI have ToM impairments, this ﬁnding emphasizes the need for further investigation into the developmental interface between language and ToM as well as the extended consequences of atypical language development.
Thes study is published in Child Development, January/February 2016, Volume 87:
Theory of Mind in Children With Speciﬁc Language Impairment: A Systematic Review and Meta-Analysis Kristine Kahr Nilsson and Kristine Jensen de López
About the authors: