The theory of privacy calculus in terms of the trade-offs between benefits and risks is believed to explain people’s willingness to disclose private information online. However, the phenomenon of privacy paradox, referring to the preference-behavior inconsistency, misfits the risk–benefit analysis. The phenomenon of privacy paradox matters because it reflects an illusion of personal control over privacy choices. The anomaly of privacy paradox is perhaps attributed to cognitive heuristics and biases in making privacy decisions. We consider the stability-instability of privacy choices is better used to explain the underlying mechanisms of paradoxical relationship. A rebalanced trade-off, referring to the embeddedness of “bridging” and “bonding” social support in privacy calculus, is derived to develop the risk–benefit paradigms to explain the underlying mechanisms. In this study we address the underlying mechanisms of privacy choices in terms of self-disclosure and user resistance. To test the hypotheses (or mechanisms) of the research model, we developed the instrument by modifying previous scales. A general sample of 311 experienced Facebook users was collected via online questionnaire survey. From the empirical results, perceived benefits based on information support rather than emotion support can motivate self-disclosure willingness. In contrast, privacy risks rather than privacy concerns inhibit the willingness to disclose private information. The risk–benefit paradigms instead of the imbalanced trade-offs help to explain the instability of privacy choices where privacy calculus sticks with the stability view. Implications for the theory and practice of privacy choices are discussed accordingly.

利益与风险权衡的隐私演算理论被认为可以解释人们在线披露私人信息的意愿。然而，隐私悖论现象，即偏好行为不一致，不符合风险收益分析。隐私悖论现象很重要，因为它反映了个人对隐私选择的控制的错觉。隐私悖论的反常现象可能归因于认知启发法和隐私决策中的偏见。我们认为隐私选择的稳定性-不稳定性更适合用来解释矛盾关系的潜在机制。重新平衡的权衡，指的是隐私演算中“桥接”和“粘合”社会支持的嵌入，旨在开发风险收益范式来解释潜在的机制。在这项研究中，我们从自我披露和用户抵制的角度探讨了隐私选择的基本机制。为了测试研究模型的假设（或机制），我们通过修改以前的量表开发了该工具。通过在线问卷调查收集了 311 名有经验的 Facebook 用户的一般样本。从实证结果来看，基于信息支持而非情感支持的感知收益更能激发自我表露意愿。相比之下，隐私风险而不是隐私问题抑制了披露私人信息的意愿。风险收益范式而不是不平衡的权衡有助于解释隐私选择的不稳定性，其中隐私计算坚持稳定性观点。相应地讨论了隐私选择的理论和实践的含义。