The thesis investigates the disliked relationship of Taiwanese high school adolescents with the ERGM partial network modeling. We have found the groupthink phenomenon, showing a larger group of students tend to ostracize the minority. On the other hand, these minorities had a difficulty to find others who also disliked the same group of people. This shows when adolescents were bullied, they reacted with forbearing and conservation. Students' self-esteem increased as they have entered senior high schools. The increased self-esteem formed the tendency for self-protection. When they were disliked, they tended to return their dislike. Reasons for disliking also changed with the increase of age. In junior high school, it was common to dislike peers who had violence behaviors. In high school, the student with high levels of violent cognition had a strong tendency to dislike others, and the dislike of the opposite gender was also more frequent.
