Wongupparaj, P. (2019). Datasets for Coloured, Standard, and Advanced Progressive Matrices (CPM, SPM, and APM) over 65 years (1950-2014). Mendeley Data, 3. https://data.mendeley.com/datasets/9jkchm9tnw/3
Wang, K., Yacobellis, P., Siregar, E., Romanes, S., Fitter, K., Dalla Riva, G, V., Cook, D., Tierney, N., Dingorkar, P., Subramanian, S., & Chen, G. (2023). learningtower: OECD PISA Datasets from 2000-2022. R package. https://kevinwang09.github.io/learningtower/
Pietschnig, J., & Voracek, M. (2015). One century of global IQ gains: A formal meta-analysis of the Flynn Effect (1909–2013). Perspectives on Psychological Science. https://journals.sagepub.com/doi/10.1177/1745691615577701
R Core Team. (2024). R: A language and environment for statistical computing. R Foundation for Statistical Computing. https://www.r-project.org/
Sievert, C. (2020). Interactive web-based data visualization with R, plotly, and shiny. Chapman and Hall/CRC. https://plotly-r.com/