Co-authored by neuroscientist and psychiatrist Amir Levine and psychologist Rachel S.F. Heller, Attached is a comprehensive and helpful relationship workbook that makes use of the attachment theory—a highly detailed and advanced science for explaining different relationship dynamics. The attachment theory, which was introduced by British psychoanalyst and psychologist John Bowlby, presents the influence of our early relationship with our parents and how it significantly affects how we build intimate relationships later on in life. The attachment theory likewise explains that our desire to be a part of an intimate relationship is rooted in our genetics. In this book, the authors concentrate on the three distinct types of attachment styles that depict how people carry themselves in a relationship, and these are: Anxious, Avoidant and Secure.