社會信任、政治參與是檢視一國民主政治運作的重要指標,以往文獻指出,社團參與、人際接觸等社會網絡是孕育社會信任、促進政治參與的顯著來源。然而,隨著社會結構、媒體環境的改變,社會網絡已逐漸式微,網路媒體則成為人際交往的主要工具。本文的研究問題即在於:新興的網際網路是否可以成為累積社會信任、提升政治參與的觸媒?建立在以往的文獻,本文認為,在網路上廣泛地與網民接觸,並不必然會產生社會信任以及政治參與;民眾必須在網路上接觸、分享或者發表與政治相關的訊息,才有利於社會信任以及政治參與。據此,本文提出兩個研究假設,預期網路政治資訊使用頻率愈高,社會信任、政治參與的程度也會愈高。利用〈亞洲民主動態調查〉第五波針對台灣的面訪資料,分析結果顯示,網路政治資訊使用並未能增加社會信任,但是能提升競選活動、接觸陳情、示威抗議等政治參與。
Social trust and political participation are crucial indicators for examining the operation of a democracy. According to the traditional argument, social networks, including personal contact and group participation, are the main sources encouraging social trust and political participation. However, the accumulation of social trust and political participation might become more difficult along with the decrease in social networks in a changing society. Can the Internet become a new source for social trust and political participation? The author argues that internet use for political information is a necessary element for promoting social trust and political participation. This study thus hypothesizes that there will be more frequent internet use for political information, the higher the degree of social trust and political participation. By adopting the fifth wave survey of the ABS, this study finds that there is no significant relationship between internet use for political information and social trust. However, internet use for political information can promote political participation which includes the election campaign, contacts, and political protests.