“…Research focusing on SWB underlines "the importance of studying dispositions in dynamic terms -that is, as a reaction to circumstances -rather than as static" (Reis, Sheldon, Gable, Roscoe, & Ryan, 2000, pp.431-432), suggesting that a diary method is particularly suitable for our context. Furthermore, with few exceptions (e.g., Kross, Verduyn, Demiralp, Park, Lee, Lin, Shablack, Jonides, & Ybarra, 2013;Arampatzi, Burger, & Novik, 2016;Burke & Kraut, 2016), research exploring the link between SNS participation and users' SWB has been dominated by crosssectional studies that focus on individual differences between study participants. However, the experience of using SNSs may differ from day to day; while on some days users may experience a high level of positive emotions following their SNS activities, on other days their perceptions may be different.…”