OBJECTIVES & AIM: The purpose of this investigation was to examine children's anxiety across the perioperative setting.Although several studies have examined preoperative anxiety in children, few researchers have illustrated perioperative anxiety; that is, anxiety in children throughout the pre and postoperative continuum.Participants were 261 children ages 2-12. Anxiety was rated prior to surgery, immediately after surgery, and for 2 weeks at home following surgery.Low child sociability and high parent anxiety predicted perioperative anxiety. Perioperative anxiety was related to postoperative pain and negative postoperative behavioral change.Identification and prevention of anxiety in children can help prevent negative outcomes following surgery.