本研究嘗試以新物質主義取徑，分析三個社群媒體平臺：PTT、Facebook、Dcard，探究臺灣年輕世代社群媒體使用，如何影響其平臺上的公共討論。本研究主張，探究社群媒體上的公共討論，需進一步考量不同社群媒體平臺間不同的組裝行動。藉由重組這三個平臺程式的運作，本研究指出其各自組裝運作實際上涉及不同應用介面的配置、演算法的介入等異質元素與使用者的共同行動。正是在不同的組裝運作中，PTT 使用者在「群聚效應」與「共演效應」中成了湊熱鬧的鄉民；Facebook 使用者則受「迴路效應」與「省力效應」影響，容易陷入同溫層；而Dcard 作為在兩者之間的新平臺，則展現「類群聚效應」、「雜處效應」與「喧嘩效應」，為作為「自我公民」的使用者打造了阻力最小的路。

Based on the new materialism theories, this study analyzed how the differences among PTT, Facebook, and Dcard influence younger social media users in Taiwan in their public discussion and participation on platforms. The study argues that to investigate the public discussion and participation on social media in more detail, it is necessary to consider the assembled activities on different platforms. By exploring the assemblages of these three platform apps (PTT, Facebook, and Dcard), the study showed that their operations are assembled respectively by different heterogeneous elements such as the app interface arrangements, the intervention of algorithms, and by the coordination of platform users. The study indicates that, through these different assembling operations, PTT users become mobbing netizens under the effects of “mobbing” and “performing-together.” Facebook users tend to become trapped in echo chambers under the effects of “loop” and “effortlessness.” Being a new platform between the other two, Dcard exhibits the effects of “mobbing-like behaviors”, “complexity” and “noises.” It creates a path of least resistance for users as “self-citizens.”

公共參與; 社群媒體; 新物質主義; 應用程式介面

public participation; social media; new materialism; app interfaces