_The Dynamics of Connection: How Evolution and Biology Create Caregiving and Attachment_ describes the logic of giving, love, trust, and nurturance. Bowlby's theory of attachment provides an excellent starting point for an explanation of nurturance, but there are some limitations in this theory, especially its tendency to minimize the caregiving side of the relationship. The book builds on and extends Bowlby's theory by examining the evolutionary evidence for both attachment and caregiving, the origins of which can be seen in the earliest mammals. It describes neurobiological research that has identified the brain circuits that underlie caregiving and attachment. The book then describes a theory of relationships based on these neurobiological circuits and the resulting human desire to give and receive emotional contact, warmth, and support. The theory details the emotional logic of this relationship process. The proactive connection process (caregiving), characteristic of parents, involves a growing capacity for both empathy and responsibility. In the receptive process (attachment), trust grows from the experience of being cared for and nurtured. These processes coexist alongside other motivations with which they interact. _The Dynamics of Connection_ introduces a view of the dyadic social psychology of connection that underlies both parent-child and close adult relationships. It provides a description and explanation of parental and adult nurturance. It gives a long-needed account of the origins of social norms of parenting. While building on the foundation of attachment theory, David Bell brings together new insights from both evolutionary theory and neurobiology to deepen our understanding of caregiving and attachment.