How does social media affect mental health in teens ages 13-25

Please look at documents attached and let me know if I need to add anything else? This is the introduction which is the first part of the research proposal. Professor says it is at least 8-10 pages for the literature review. 8 articles are being used for my paper, please make sure the references are correctly written and you can locate all the articles that are peer reviewed. Does this make sense? This is for PSYC 314, Research Methods In Psychology