Until now, there has been no population-based MRI study examining brain abnormalities in Chinese youths with psychotic experiences (PEs). A total of 200 Chinese youths aged 15-24 years (100 with and without PEs) were recruited to examine the group differences in PEs vs non-PEs in terms of psychopathological severity, psychosocial functioning, cognitive functions, reward-learning and effortallocation, and neuroanatomical and functional-connectivity abnormalities. PEs are associated with subtle neuroanatomical and functional-connectivity abnormalities as well as mild reward-learning and effort-allocation impairment.