„Decades of research has provided evidence of the strong link between extracurricular reading and reading comprehension.“
Univ.-Prof. Dr. Hildegunn Støle u. a., The Importance of Parents’ Own Reading for 10-Year Old Students’ Reading Achievement in the Nordic Countries. In: Dr. Tove Stjern Frønes u. a., Equity, Equality and Diversity in the Nordic Model of Education (2020), S. 377.