Supplementary Material Altered social cognition and connectivity of default mode networks in the co-occurrence of autistic spectrum disorder and attention deficit hyperactivity disorder Kai Wang 1,2,# , Mingyu Xu 2,# , Yiting Ji 2 , Lingli Zhang 1,2 , Xiujuan Du 2 , Jijun Li 6 , Qiang Luo 4,5,* and Fei Li 2,3,* Affiliations: 1 Shanghai Children’s Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, PR China. 2 Developmental and Behavioral Pediatric Department & Child Primary Care Department, MOE- Shanghai Key Laboratory for Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China. 3 Shanghai Institute of Pediatric Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China. 4 Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China and Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence (Fudan University), Ministry of Education, China. 5 School of Life Sciences and State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, PR China.