The primary focus of our research is pair-bond formation which we are investigating at multiple levels of analysis using a wide variety of methods. The two overarching goals of our present multi-study, multi-method, multi-level MAP project are 1) to identify "markers" of adult attachment bonds and 2) to specify the underlying processes by which such bonds are formed. The studies are based on two assumptions: 1) adult attachment bonds develop over time, and 2) adult attachment bonds, once formed, will be evident at multiple levels of functioning - e.g., behavioral, cognitive, physiological, neurobiological.