本研究旨在以結構方程式模型探討成人依附、社交自我效能、困擾的自我揭露、寂寞與憂鬱之間的關係。以國內805 位有戀愛經驗大學生為對象，分為兩組，一組用來刪題與發展模式；另一組用來驗證模式。在模式適配良好且穩定情況下，得到如下結論：1.逃避依附與焦慮依附會透過社交自我效能而間接影響寂寞，再間接影響憂鬱；2.逃避依附會透過困擾的自我揭露，間接影響社交自我效能，再透過社交自我效能間接影響寂寞，再間接影響憂鬱；3.焦慮依附會直接影響憂鬱；4.焦慮依附會透過寂寞間接影響憂鬱；5.焦慮依附對憂鬱的影響效果會大過逃避依附對憂鬱的影響效果；6.困擾的自我揭露對寂寞不具直接影響力，困擾的自我揭露會透過社交自我效能間接影響寂寞。

The main purpose of this research was to use SEM model to study the relationships among adult attachment, social self-efficacy, distress self-disclosure, loneliness and depression of the college students who had romantic experience. The participants of the study were 805 Taiwan college students who had romance, and were divided into two groups. Data from the participants in group one were used for instrument and model development, and data from the participants in group two were used for model validation. The researcher found the model was well supported by observed data and the stability of the model was confirmed. The main results were as follows: (a) Attachment avoidance and attachment anxiety affect social self-efficacy, which in turn affects loneliness and further indirectly affect depression through loneliness; (b) Attachment avoidance affects distress self-disclosure, which in turn affects social self-efficacy and sequentially affects lonelinessand depression; (c) Attachment anxiety directly affects depression; (d) Attachment anxiety indirectly affects depression through loneliness; (e) Attachment anxiety is a stronger predictor for depression thanattachment avoidance; and (f) Distress self-disclosure indirectly affects loneliness through social self-efficacy.