社群网站给大众一个很好自我呈现的舞台、满足人们内心的归属感与渴望备受注目的心态，它虽然缩短人与人间的距离，但信息泛滥卻令用户生活过度依赖网络，产生因为心理上怕错过的信息遗漏恐惧症（Fear of Missing Out，FoMO）。本研究目的在探讨社群使用者在Facebook上的使用动机是否因受欢迎需求、归属需求、自我呈现需求、知觉有用性、信息遗漏恐惧症以及社群参与有所关系。本研究以SEM结构方程模式检验此一新模式的适配度和相关假说，研究结果显示：(1)受欢迎需求、归属感需求以及自我呈现需求在Facebook的使用上呈正相关；(2)知觉有用性、自我呈现与使用者社群参与之间呈正相关；(3)社群参与使用者满意度呈正相关，并根据研究发现进一步提出相关学术、管理上的意涵及未来研究方向。

关键词：信息遗漏恐惧症、社群参与、知觉有用性、自我呈现、满意度

Social network has provided a good stage for the public to present themselves and satisfied people’s sense of belonging as well as desire for attention. Although it shortens the distance between people, the information flooding makes the user’s life depend on the network excessively that results in a psychological fear of missing out. The purpose of this study is to investigate the relationships among motivations (i.e., need for popular, need for belong and self-presentation) and fear of missing out (FoMO) as well as social media engagement variables. The structural equation model (SEM) is used to test the proposed model and the results show that: (1)need for popular, need for belong and self-presentation are positively related to Facebook social media engagement; (2)perceived usefulness and self-presentation are positively related to social media engagement; (3)social media engagement is positively related to users satisfaction. Relevant academic and managerial implications as well as directions of future study are proposed based on the research findings.

Keywords: Fear of Missing Out, Social Engagement, Perceived Usefulness, Self-presentation, Satisfaction