„The largest participation gaps occur along dimensions of skill proficiency, educational attainment and income. Adults who perform better on these metrics are consistently more likely to participate in adult learning. […] These disparities are not only a matter of individual choice, but also reflect broader issues that can reinforce existing social and economic inequalities.“
OECD (Hrsg.), Trends in Adult Learning. New Data from the 2023 Survey of Adult Skills (2025), S. 40.