Problem: Adaptive Functioning: His non-verbal status further complicates his ability to express his needs, leading to frustration and aggressive behaviors. Notably, Pierre exhibits several concerning behaviors, including aggressive physical behavior, concentration problems, difficulty maintaining sleep, food concerns, and hyperactivity/impulsivity. These challenges contribute to Pierre's feelings of frustration and hinder his ability to express his needs effectively, which can lead to aggressive behaviors as a form of communication. Need Assignment Help?