& 179 PERSONAL CONTRIBUTIONS PERSONAL CONTRIBUTIONS The doctoral candidate, Jan Willem van den Berg, conducted the research presented in this dissertation, with the help of several collaborators. The contribution of the coauthors has been listed below per chapter. Prof. dr. Luk Gijs, prof. dr. Erick Janssen, dr. Daan van Beek, and dr. Wineke Smid provided senior supervision and mentorship on the research and writing of all the manuscripts. Chapter 2, Meta-Analysis J. W. van den Berg developed the study concept. All of the authors contributed to the study design. J. W. van den Berg and K. Schepers examined the studies for eligibility and assessed the reported effect sizes suitable for inclusion in the meta-analysis. Statistical analyses were conducted by J. W. van den Berg and E. Wever. All of the authors were involved in the interpretation of the meta-analyses. J. W. van den Berg drafted the manuscript, and all of the authors provided feedback and contributed to the final manuscript. All of the authors approved the final manuscript for submission. Chapter 3, Network Analysis (DSP) J. W. van den Berg developed the study concept. All of the authors contributed to the study design. Statistical analyses were conducted by J. W. van den Berg and J. J. Kossakowski, under supervision of D. Borsboom. J. W. van den Berg, W. Smid, D. van Beek, L. Gijs, and E. Janssen were all involved in the interpretation of the network analyses. J. W. van den Berg drafted the manuscript, and all of the authors provided feedback and contributed to the final manuscript. All of the authors approved the final manuscript for submission. Chapter 4, Replication Network Analysis (DSP and BC) J. W. van den Berg developed the study concept. All of the authors contributed to the study design. Statistical analyses were conducted by J. W. van den Berg, J. J. Kossakowski, and K. M. Babchishin, under supervision of D. Borsboom. J. W. van den Berg, W. Smid, K. M. Babchishin, D. van Beek, L. Gijs, and E. Janssen were all involved in the interpretation of the network analyses. J. W. van den Berg drafted the manuscript, and all of the authors provided feedback and contributed to the final manuscript. All of the authors approved the final manuscript for submission. Chapter 5, Series of case-studies (ESM) J. W. van den Berg developed the study concept and was responsible for the application to review the research protocol by the medical ethics review board. All of the authors contributed to the study design. J. W. van den Berg and D. C. van der Veen constructed the draft ESM questionnaires, under supervision and in consensus
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