生活目標能促進青少年的整體發展，但生活目標所帶給青少年的正向影響力尚需搭配適當的社會資源來輔助。本研究旨在探討生活目標發展中的「確認目標」和「尋找目標」與「社會支持」的關聯，並進一步分析此關聯是否會受目標定向之相關構念「希望感」和「自我效能」的中介影響。本研究採問卷調查法，以台灣地區438名青少年為研究對象，並運用結構方程模式進行資料分析。研究結果顯示：（1）所有研究變項皆呈現顯著正相關；（2）希望感對於生活目標的兩面向與社會支持的關聯具有部分中介效果，而自我效能對於其關聯不具任何中介效果。由本研究結果可知，社會支持與希望感對於青少年生活目標的發展具有影響力。最後，本研究針對研究結果進行討論，並闡述研究限制、實務意涵與未來研究發展。

While having a purpose in life fosters optimal youth development, the attainment of this purpose would be implausible without appropriate resources. Employing structural equation modeling, this study aimed to understand the relations that purpose development (i.e., purpose commitment and exploration) had with external resources of support from significant others (i.e., family and peers) and internal resources of goal-oriented dispositions (i.e., hope and self-efficacy) among a sample of Chinese adolescents in Taiwan (N = 438). Specifically, this study investigated the double-mediation effect of hope and self-efficacy on the relationships between social support for youth's interest and purpose development. Results revealed that all variables were positively correlated. In addition, direct and indirect paths were found between social support for interest and purpose development. The associations between social support for interest were partially mediated by hope. The roles of social support as well as hope in adolescent purpose development, possible explanations for the insignificant mediating effect of self-efficacy, and practical implications were discussed.