[目的/意義]探索和驗證移動社交網絡用戶的使用行為與隱私關注之間隨時間推移的階段性關系。結合現有的信念更新理論,提出了一種隱私權衡模型,分別對用戶在接觸新的移動社交網絡的三個階段(使用前、使用初期、持續使用),用戶感知利益和隱私關注關系以及其自我披露意愿進行探索。[方法/過程]融入隱私權衡理論,對移動社交網絡用戶自我披露意愿進行了探究。通過調研512個高校學生群體中的有效樣本分三階段進行調研,采用結構方程模型等方法對其進行測量,并檢驗中介效應。[結果/結論]實驗結論顯示:感知利益對用戶使用和自我披露有正向影響,隱私關注對兩者則有負向影響,這種影響都會隨著時間推移而加深;值得關注的是用戶使用作為中介變量會放大其他變量對用戶披露的影響。自我披露對用戶后期感知利益有較大的正向影響,用戶使用對其后期的隱私關注會有較大的負向影響。

[Purpose/significance] This paper explores and verifies the staged relationships between mobile social network users’ use behavior and their privacy concerns as time goes on.Based on the existing concept updating theory,a privacy trade-off model is proposed to explore the three stages of users’ engagement in mobile social network(before use,initial use,continuous use),relationship between user perceived benefit and privacy concern,and users’ self-disclosure intention.[Method/process] This paper has integrated into it the privacy trade-off theory,and probed into social network users’ willingness of self-disclosure.The research was conducted by carrying out the surveys on 512 college student group valid samples in three stages,and structural equation model was adopted to test the samples,as well as validate the mediating effect.[Result/conclusion] The test result indicates:perceived benefits have positive impact on users’ usage and self-disclosure,while privacy concerns have negative impact on both of them.And both the positive and negative impacts increase as time goes on;it should be noted that users’ usage,as the mediating variable,will amplify the impact of the other variables on users’ disclosure.Self-disclosure has a greater positive impact on users’ perceived benefits in the later stage,and users’ usage will have a greater negative impact on their privacy concern in the later stage.