License: Licence agreement concerning inclusion of doctoral thesis in the Institutional Repository of the University of LeidenAliteracy: Causes and Solutions • February 1st, 2016
Contract Type FiledFebruary 1st, 2016We compared students from schools with an enriched school library – a larger and more up-to-date book collection – with students from schools with a typical school library. We tested effects of an enriched school library on reading motivation, reading frequency, and academic skills. Fourth and fifth grade students of 14 schools with an enriched library (n = 272) were compared to fourth and fifth graders from 10 control schools (n = 411). Assignment to the experimental group was external and not determined by participants within schools, just as in randomized control trials. Students from schools with enriched libraries scored on average half a standard deviation higher on a standardized reading comprehension test than students from control schools. Mediation analysis revealed that for girls, this effect may have been obtained as a result of an increase in reading motivation and reading frequency. For boys, only reading frequency was a significant mediator.