In the past 2 years, the investigators have conducted 3 pilot studies that have examined the stability of perioperative anxiety in children (n=90) and parents, as well as the feasibility of our recruitment and testing protocol, and to pilot test the interactive tablet-based application. The investigators have established that PA can be reliably and validly measured in children and that the rate of participant recruitment, data collection, website adherence and follow-up protocols for the proposed study are feasible and acceptable. The investigators will now progress to conduct the randomized controlled trial (RCT).