利用长时程和密集问卷追踪调查、自然互动观察、行为实验等技术研究儿童青少年同伴关系与社会-情绪发展，具体方向包括：(1)社会网络视角下的同伴关系与儿童青少年心理社会适应；(2) 微观实时尺度的人际互动过程对青少年情绪发展的长期影响；(3)欺凌与保护行为。

近5年主要学术成果[^†共同一作; ^*通讯作者]：

Jin, G., Wei, L., Wang. Z., Ren, H^*., & Liu, J^*. (2026). Defending victimized peers in unique ways: Profiles and transitions in defending strategies and their associations with youth social-emotional adjustment. Journal of School Psychology, 115, 101524. 

Jin, G., Bian, X., Zhou, T., & Liu, J^*. (2024). Different ways to defend victims of bullying: Defending profiles and their associations with adolescents’ victimization experiences and depressive symptoms. Journal of Youth and Adolescence, 53(3), 621–631.

Jin, G., Fu, R., Li, D^*., Chen, X., & Liu, J. (2022). Longitudinal associations between prosociality and depressive symptoms in Chinese children: The mediating role of peer preference. Journal of Youth and Adolescence, 51(5), 956–966.

韩宪国^†, 金国敏^†, 李丹^*, 刘世宏, 吴琴, 刘俊升, 陈欣银. (2025). 父母温暖与儿童晚期亲社会行为的关系: 集体取向的作用. 心理学报, 57(04), 614–630.

卞小华, 金国敏^*, 孙琰, 刘俊升^*. (2025). 青少年同伴侵害与孤独感的关系: 教师班级管理策略的作用. 心理科学, 48(03), 514–523.