Dan SiegelThe author worked for more than four decades as a psychiatric social worker in a variety of outpatient settings. During those years, he developed a model of human nature that sought to help him understand clients more quickly. Later, he applied to sae model to extend this view of human nature to parenting, marital conflict, economic and political behavior. Although no model of human nature can be considered complete, this one seeks to clarify out nature, especially over matters of values and unwanted symptoms. Read More Read Less