吳志文Wu, Chih-Wen李禹萱Lee, Yu-Hsuan2025-12-092030-06-302025https://etds.lib.ntnu.edu.tw/thesis/detail/086686afcf6cc5aec9627470dc1898a2/http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/124326本研究旨在探討自我價值後效與青少年社群媒體成癮之間的關係，並以自我呈現作為中介變項。研究聚焦於自我價值後效中的「他人認可領域」與「外表領域」，探討這兩者如何透過青少年在社群媒體上的正向自我呈現、誠實自我呈現與負向自我呈現，進而影響其社群媒體成癮傾向。研究對象為13至15歲的在學國中生，納入分析的有效樣本為320筆（女學生187筆；男學生133筆）。本研究採問卷調查法進行資料蒐集，使用的研究工具包括社群媒體成癮量表、自我價值後效量表與自我呈現量表。資料分析分為三個步驟：首先使用 SPSS 23.0 進行描述性統計分析；再以皮爾森相關分析檢視各變項之間的關聯；最後透過 PROCESS Macro模型四，檢驗中介效果。研究結果顯示，無論性別，只要青少年越在意他人對自我的認可，其社群媒體成癮傾向越高。進一步分析發現，「正向自我呈現」與「誠實自我呈現」對社群媒體成癮並無顯著中介效果；至於「負向自我呈現」的路徑，在女性樣本中雖呈現正向間接效果，但其信賴區間包含 0，未達顯著水準，顯示影響力極為有限。在外表自我價值方面，女性越在意外表，越可能間接透過「正向自我呈現」而提升社群媒體成癮傾向，此一中介過程在男性中則不顯著。本研究有助於深化對青少年社群媒體成癮心理機制的理解，並為未來針對性別差異的介入與輔導措施提供理論與實務參考。This study aimed to explore the relationship between contingencies of self-worth and social media addiction among adolescents, with self-presentation serving as a mediating variable. The research focused on two domains of contingent self-worth, approval from others and appearance, and examined how these domains influence adolescents' social media addiction through three types of self-presentation: positive, honest, and negative. Participants were 320 junior high school students aged 13 to 15 (187 girls and 133 boys). Data were collected via questionnaires, using the Social Media Addiction Scale, the Contingencies of Self-Worth Scale, and the Self-Presentation Scale. Data were analyzed with SPSS 23.0 for descriptive statistics, Pearson correlations, and mediation testing via PROCESS Macro Model 4. Results indicated that regardless of gender, adolescents who based their self-worth more heavily on others’ approval tended to exhibit higher levels of social media addiction. Further analyses showed that positive and honest self-presentation did not significantly mediate this relationship. Regarding negative self-presentation, a slight indirect effect was observed among female participants whose self-worth depended on others’ approval; however, the confidence interval included zero, indicating a non-significant effect. In the appearance domain, girls who placed higher value on appearance were more likely to show an indirect effect through positive self-presentation, whereas this pathway was not significant for boys. These findings contribute to a better understanding of the psychological mechanisms underlying adolescent social media addiction and provide theoretical and practical implications for gender-specific intervention strategies.自我價值後效社群媒體成癮自我呈現contingencies of self-worthsocial media addictionself-presentation學術論文