本研究旨在探討大學生的刺激尋求動機、網路心理需求與網路成癮之間的關係，並考驗網路心理需求在刺激尋求動機與網路成癮之間的中介效果。本研究以411位大學生為研究對象，以「刺激尋求量表」、「網路心理需求量表」與「陳氏網路成癮量表」為研究工具，採用結構方程模式進行統計分析。本研究的主要結果為：1.刺激尋求動機對大學生的網路心理需求有正向的直接效果；2.網路心理需求對大學生的網路成癮有正向的直接效果；3網路心理需求完全中介刺激尋求動機和網路成癮之間的關係。本研究針對研究結果，對教育與輔導，以及未來的研究方向提出建議。

The purpose of this study is to explore the relationships among undergraduates’ sensation seeking motive, Internet psychological need and Internet addiction, as well as to test the mediation effect of Internet psychological need between sensation seeking motive and Internet addiction. The subjects were 411 undergraduates in Taiwan. Structural Equation Modeling was used to analyze the data. The results are as follows: 1. Sensation seeking motive has positive direct effects on Internet psychological need. 2. Internet psychological need has positive direct effects on Internet addiction. 3. Internet psychological need completely mediate the relationships between sensation seeking motive and Internet addiction. Suggestions and implications for education, counseling, and future research are discussed.