研究员，博士生导师。2003年毕业于中国协和医科大学，获得医学博士学位。2003年9月至2005年10月于中科院心理研究所心理健康重点实验室进行博士后工作，从事情绪障碍相关脑电特点的研究。2005年10月至今于中科院心理研究所心理健康重点实验室从事青少年心理健康研究。研究兴趣在于，遗传因素与环境因素是如何共同影响青少年心理健康的。其领导的研究小组在遗传-环境交互作用方面的工作取得的多项成果获得了国内外同行认可的成果。研究小组针对我国青少年心理发展问题精心设计并组建了北京市青少年样本库（BeTwiSt）。
主持国家自然科学基金项目2项，作为子课题负责人参与中科院知识创新项目和国家自然科学基金重点项目培育项目等多项课题。曾参与《追寻记忆的痕迹》、《认知神经科学教程》、《生理心理学》等多部学术专著的翻译或编纂。
Chen, J., Li, X., Natsuaki, M. N., Leve, L. D., Harold, G. T. (2014) Genetic and Environmental Influences on Depressive Symptoms in Chinese Adolescents. Behavior Genetics, (in press)
Chen, J., Li, X. (2014). Genetic and environmental etiologies of adolescent dysfunctional attitudes: A twin study. Twin Research and Human Genetics. (in press)
Chen, J., Li, X. (2013). Genetic and environmental influences on adolescent rumination and its association with depressive symptoms. Journal of Abnormal Child Psychology, 41, 1289-1298.
Chen, J., Li, X., McGue, M. (2013). The interacting effect of the BDNF Val66Met polymorphism and stressful life events on adolescent depression is not an artifact of gene-environment correlation: evidence from a longitudinal twin study. Journal of Child Psychology and Psychiatry, 54(10), 1066-1073.
Chen, J., Li, X., Zhang, J., Natsuaki, M. N., Leve, L. D., Harold, G. T., Chen, Z., Yang, X., Guo, F., Zhang, J., Ge, X. (2013). The Beijing twin study (BeTwiSt): a longitudinal study of child and adolescent development. Twin Research and Human Genetics, 16(1), 91-97.
Chen, J., Li, X., McGue, M. (2012) Interacting effect of BDNF Val66Met polymorphism and stressful life events on adolescent depression. Gene, Brain and Behaviors. 11: 958-965.
Chen, J., Li, X., Zhang, J., Natsuaki, M. N., Leve, L. D., Harold, G. T., Chen, Z., Yang, X., Guo, F., Zhang, J., Ge, X. (2012) The Beijing Twin Study (BeTwiSt): a longitudinal study of child and adolescent development. Twin Research and Human Genetics. 16(Special Issue 01): 91-97.
Li, X., McGue, M., Gottesman., I.I. (2012). Two sources of genetic liability to depression: interpreting the relationship between stress sensitivity and depression under a multifactorial polygenic model. Behavior genetics. 42(2), 268-277.
Chen, J., Li, X., Chen, Z., Yang, X., Zhang, J., Duan, Q., Ge, X. (2010). Optimization of zygosity determination by questionnaire and DNA genotyping in Chinese adolescent twins. Twin Research and Human Genetics. 13(2), 194-200.
Guo, F., Chen, Z., Li, X., Yang, X., & Ge, X.（2011）. Parenting Does Matter: the Relation between Nonshared Environment and Monozygotic Adolescent Twin Differences in Effortful Control. Social Behavior and Personality. 39(3), 299-308.
Liu, Z., Li, X., & Ge, X. (2009). Left Too Early: The Effects of Age at Separation From Parents on Chinese Rural Children's Symptoms of Anxiety and Depression. American Journal of Public Health. 99(11): 2049-2054.
Chen, Z., Guo, F., Yang, X., Li, X., Duan, Q., Zhang, J., & Ge, X., (2009). Emotional and behavioral effects of romantic relationships in Chinese adolescents. Journal of Youth and Adolescence. 38(10): 1282-1293.
Li, X., Wang, M., Poliakoff, E., Luo, Y-J. (2007). Attention to threat in high and low trait anxious individuals: A study using extremely threatening pictorial cues. Perceptual and Motor Skills, 104, 1097-1106.
Poliakoff, E., Miles, E., Li, X., & Blanchette, I. (2007). The effect of visual threat on exogenous spatial attention to touch. Cognition, 102, 405-414.
王素华,陈杰,李新影. (2013) 交往不良同伴对青少年自身问题行为的影响：性别和年龄的调节作用. 中国临床心理学杂志, 21(2), 281-284.
李梦姣,陈杰,李新影. 非药物成瘾的遗传学和神经生物学机制研究评述. 心理科学进展. 2012, 20(10): 1-10.
张俊先,陈杰,李新影. 5-HTTLPR与抑郁相关性的研究动态. 心理科学. 2012, 35(1): 226-232.
张俊先,陈杰,李新影. 母亲抑郁与青少年认知重评的关系：教养方式的中介作用. 中国临床心理学杂志, 2011, 19(5): 690-691.
侯金芹,李新影,杨小冬,陈祉妍. 父母教养与外化行为关系的行为遗传学研究. 中国临床心理学杂志, 2010, 18(6): 742-744.
陈祉妍,杨小冬,李新影. 我国儿童青少年研究中的抑郁自评工具. 中国心理卫生杂志, 2007, 21(6)：389-392.