Hi Ryan! In terms of CPR and using an AED, anyone over the age of 8 or more than 55 pounds, is considered an adult. This video shows the pad placement and CPR for an adult. Now if the boy was under 8 or less than 55 pounds, he would be considered a child - meaning that the CPR depth would be reduced and the AED pads would instead be placed on the front centre of the chest, and back centre of the chest. Let us know if you have any questions :)