The association between mode of delivery [specifically birth by Cesarean section (CS)] and induction of labor (IOL) psychological development at age 7 was assessed [including autism spectrum disorders (ASD), attention-deficit/hyperactivity disorder (ADHD) and behavioral difficulties]. The Millennium cohort study, a nationally representative UK cohort of children (including 13,141 children), was used. There was no association between planned CS and ASD [aOR 0.58; (95 % CI 0.19-1.79)] or ADHD [aOR 0.54; (95 % CI 0.18-1.64)] analyses. Induced vaginal delivery was significantly associated with behavioral difficulties in unadjusted [OR 1.26; (95 % CI 1.03-1.54)], but not adjusted analysis [OR 1.15; (95 % CI 0.82-1.60)]. There was no association between mode of delivery and ASD or ADHD in this cohort. Further research is needed to understand the relationship between mode of delivery and IOL and psychological development.