Guifeng Xu is a current PhD candidate in Epidemiology program, and she is currently working for Dr Lane Strathearn as a graduate research assistant. Previously, she earned her MA in Applied Developmental Psychology from George Mason University in 2015; M.D. from Huazhong University of Technology and Science, China in 2006; and her MPH from Sun Yat-Sen University, China in 2009. Before coming to US, Guifeng worked in Guangzhou Women and Children’s Medical Center, China from 2009 to 2011, focusing on assessment and therapy for children with developmental behavioral disorders. After coming to US, she worked as an intern at Zero to Three, National Center for Infants, Toddlers, and Families in 2014, and worked part-time in day treatment in 2016. Guifeng’s research interest is mostly about children’s developmental and behavioral disorders.