Maartje Boer

370 About the Author Maartje Boer (1990) obtained a bachelor in Law at the University of Applied Sciences Utrecht in 2011. In 2014, she obtained her master’s degree of the program Social Policy and Interventions at Utrecht University. In 2017, she obtained her second master’s degree of the research master program Sociology and Social Research at Utrecht University ( cum laude ). During her studies, she did research internships at several national research institutes, namely Panteia, The National Institute for Family Finance Information (i.e., Nibud), and the Netherlands Institute for Social Research (i.e., Sociaal and Cultureel Planbureau). Also, she combined here studies with part-time work as a research-assistant at Utrecht University. In 2017, Maartje started her PhD-project at the department of Interdisciplinary Social Science of Utrecht University on the relation between social media use and wellbeing among adolescents, with particular focus on problematic social media use. As part of her PhD-track, in 2017 and 2018, she assisted with the coordination of the data collection of the 'Health Behaviour in School-aged Children' (HBSC) study in the Netherlands, in which 9000 adolescents from primary and secondary schools participated. During her PhD, she presented her work at international conferences, such as the International Conference on Behavioral Addictions (ICBA) and the European Association for Research on Adolescence (EARA) conference. She also gained experience with other aspects of science during her PhD, for example by being member of the PhD-council of the Faculty of Social and Behavioral Sciences as a representative of her PhD-group, by reviewing studies for international journals (e.g., Computers in Human Behavior ), and by providing guest lectures on her research to students. Currently, Maartje is employed at the department of Interdisciplinary Social Science as a postdoctoral researcher. She will work on a national report on the health (behaviors) and wellbeing of Dutch adolescents based on recent data from the HBSC-study (2021), as well as other research projects related to adolescents’ health and wellbeing.