Negative behavior. Positive behavior. Believe it or not, they both take practice. Positive Intervention Behaviors and Supports (PBIS for short) are designed to help us learn the difference. That’s what PeaBo I Sullivan is about to find out when he moves into his new home with Mr. and Mrs. Sullivan. Join PeaBo on his very first walk, and his very first encounter with the world around him. He will discover a few surprises, including an introduction to PeeMail.