IHM comprehensive assessment of behaviors includes helping to identify the concerning behaviors, identifying the varied variables that influence and evoke them, and outlining a number of interventions – proactive and reactive, for addressing them. In describing behaviors, we hope to distinguish the description of behaviors from the emotions and feelings in response to the behaviors.  In identifying different variables that influence and evoke behaviors, we expect to provide information of the Personal Characteristics and Internally Motivated variables that influence behaviors, and of the Externally (socially) Motivated variables that evoke behaviors. Aligned with this latter category of variables, the four common social functions of behaviors will be reviewed. Finally, an outline of various interventions to address behaviors will distinguish proactive and reactive strategies.