Nurturing the reading brain: home literacy practices are associated with children’s neural response to printed words through vocabulary skills

Previous studies indicate that children are exposed to different literacy experiences at home. Although these disparities have been shown to affect children’s literacy skills, it remains unclear whether and how home literacy practices influence brain activity underlying word-level reading. In the present study, we asked parents of French children from various socioeconomic backgrounds (n = 66; 8.46 ± 0.36 years, range 7.52–9.22; 20 girls) to report the frequency of home literacy practices. Neural adaptation to the repetition of printed words was then measured using functional magnetic resonance imaging (fMRI) in a subset of these children (n = 44; 8.49 ± 0.33 years, range 8.02–9.14; 13 girls), thereby assessing how sensitive was the brain to the repeated presentation of these words. We found that more frequent home literacy practices were associated with enhanced word adaptation in the left posterior inferior frontal sulcus (r = 0.32). We also found that the frequency of home literacy practices was associated with children’s vocabulary skill (r = 0.25), which itself influenced the relation between home literacy practices and neural adaptation to words. Finally, none of these effects were observed in a digit adaptation task, highlighting their specificity to word recognition. These findings are consistent with a model positing that home literacy experiences may improve children’s vocabulary skill, which in turn may influence the neural mechanisms supporting word-level reading.

Home Literacy Environment and Emergent Skills in Preschool Children With Hearing Loss

Home literacy practices reported by parents of preschool children with hearing loss were compared to those reported by parents of their peers with typical hearing. Parents completed a questionnaire from Boudreau, D. (2005. Use of a parent questionnaire in emergent and early literacy assessment of preschool children. Language, Speech, and Hearing Services in Schools, 36, 33–47. doi:10.1044/0161-1461(2005/004)) assessing home literacy practices across areas such as parent facilitation of literacy and time spent reading per week. As part of a larger study, children completed language and emergent literacy assessments. Parents of both groups reported similar amounts of time spent reading to their children and scored similarly on report of parent facilitation of literacy, even though children with hearing loss scored lower on measures of emergent literacy. However, parents of children with typical hearing reported that their children had higher engagement and interest in books than children with hearing loss. Additionally, only child engagement with books was correlated with emergent literacy skills and only for children with hearing loss. The results suggest that parent facilitation of literacy alone is not correlated with emergent literacy scores; children must take an active role in their reading development. Children with hearing loss must be active participants during shared book reading. It is therefore essential to develop ways to actively engage children with hearing loss during reading activities.