„In all PISA-participating countries and economies in 2018, girls reported much higher levels of reading enjoyment than boys. On average across OECD countries, the difference in reading for enjoyment between boys and girls was larger than half a standard deviation. […] Nevertheless, gender is not the only factor that shows differences in the reading enjoyment index within countries. On average across OECD countries, the difference in reading for enjoyment between students from advantaged and disadvantaged socio-economic backgrounds was about half a standard deviation in favour of advantaged students.“
OECD (Hrsg.), 21st-Century Readers (2021), S. 79.