本研究之研究目的旨在：(一) 探討友情、愛情與親情三種情感關係的共同性；(二) 探討友情、愛情與親情三種情感關係的獨特性；(三) 探討友情、愛情與親情三種情感關係之共同性與情感關係滿意度的關係；(四) 探討友情與愛情二種情感關係之共同性與情感關係穩定度的關係；(五) 探討友情關係中的性別差異。 研究者為690位大學生與研究生進行人際關係量表施測，分友情、愛情與親情三組樣本，各為230人；回收之有效問卷共617份，其中友情為203份、愛情為206份、親情為208份。調查結果透過描述統計、獨立樣本t考驗、單因子變異數分析、積差相關分析、簡單迴歸分析與多元迴歸分析進行研究分析工作 研究主要發現如下： 一、友情、愛情與親情三種情感關係有共同性存在。 二、愛情關係與親情關係有獨特性存在。 三、三種情感關係之共同性與情感關係滿意度有顯著正相關。 四、三種情感關係之共同性僅與友情關係穩定度有顯著正相關。 五、友情關係中，女性對「親密感」的重視顯著高於男性。 六、異性友誼中之「愛情成份」顯著高於同性友誼。 七、友情階段至愛情階段存在著漸變的光譜特質。 / The main purposes of this study are to explore: (a) the commonality of friendship, romantic relationship, and parent-child relationship, (b) the uniqueness of friendship, romantic relationship, and parent-child relationship, (c) the relationship between commonality and satisfaction of friendship, romantic relationship, and parent-child relationship, (d) the relationship between commonality and stability of friendship and romantic relationship, (e) the gender differences in friendship. A total of 690 undergraduate and postgraduate students participated in the study. The participants are then separated into three equal groups with 230 students in each group. The survey on the interpersonal relationship scale was then administered to each group regarding a unique relationship such as friendship, romantic relationship, and parent-child relationship. Total valid questionnaires are 617; among them are 203 regarding friendship, 206 regarding romantic relationship, and 208 regarding the parent-child relationship. Data were collected, processed, and analyzed using the following statistic methods: descriptive statistics, t-test, One-way ANOVA, Pearson's product-moment correlation, simple regression analysis, and simultaneous multiple regression analysis. Major findings are summarized as follows: 1.There are commonalities found among friendship, romantic relationship, and parent-child relationship. 2. There is uniqueness between romantic relationship and parent-child relationship. 3. There are significant positive correlations between the commonality and satisfaction of friendship, romantic relationship, and parent-child relationship. 4. There are significant positive correlations between the stability of friendship and the commonality of friendship, romantic relationship, and parent-child relationship. 5. Female students pay much attention to closeness than male students in friendship. 6. The romantic in opposite sex friendship shows significant positive correlation than in the same sex. 7. The gradual change of spectrum last in the stage of friendship to romantic stage.