This is the project page associated with Beyens, I., Pouwels, J. L., van Driel, I. I., Keijsers, L., & Valkenburg, P. M. (2021). Social media use and adolescents’ well-being: Developing a typology of person-specific effect patterns. *Communication Research*. https://doi.org/10.1177/00936502211038196 [1] This project page contains: - The preregistration of the hypotheses and analysis plan ([https://osf.io/692h7/][2]) - The manuscript files - The syntax files The data set generated and analysed for the study is available in [Figshare][3]. Please cite the data as Beyens, I., Pouwels, J. L., van Driel, I. I., Keijsers, L., & Valkenburg, P. M. (2021). Data set belonging to Beyens et al. (2021). Social media use and adolescents’ well-being: Developing a typology of person-specific effect patterns. [Data set]. doi:10.21942/uva.14557902 This project is part of Project AWeSome (https://osf.io/38qcg/) - Subproject 3 (https://osf.io/uxnm8/). The preregistration of the design and sampling plan of the project is available at [https://osf.io/327cx/][4]. [1]: https://doi.org/10.31234/osf.io/ftygp [2]: https://osf.io/692h7/ [3]: https://doi.org/10.21942/uva.14557902 [4]: https://osf.io/327cx/