This dissertation, "A Comparison of the Relations of Adolescent's Own and Their Peers' Academic Motivation Within Different Peer Relationships" by Wai-sze, Chan, 陳慧斯, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The present study compares the relation of early adolescents' academic self-concept, effort regulation and task value with their peer of three distinct relationships, which named as mutual friendships, frequent interactive pairs and social groups. Data was collected from a secondary school in Hong Kong with 135 form 1 students and 176 form 3 students. Moderating effect of adolescents' own motivation on help-seeking and peer-learning in each type of peer relationship and developmental difference were also explored. Different correlation found in academic self-concept and effort regulation across forms proves the existence of three distinct types of peer relationship. Result shows that social group's academic characteristic is most predictable for early adolescent's own academic motivation. Result also suggests that motivation on help-seeking and peer-learning moderate the relation of adolescents' academic effort regulation and task value mainly in dyadic relationships, such as mutual friendships and frequent interactive pairs. DOI: 10.5353/th_b5157727 Subjects: Motivation in educationInterpersonal relations in adolescents