For the past 20 years, while continuing his clinical practice, he has immersed himself in the study of neuroscience and in teaching mental health practitioners about the brain, giving numerous workshops for mental health professionals on “Putting the Brain in Therapy.” Dan Hughes is a clinical psychologist who founded and developed Dyadic Developmental Psychotherapy (DDP), the treatment of children who have experienced abuse and neglect and demonstrate ongoing problems related to attachment and trauma. Several years ago, Dr. Baylin began a collaborative relationship with Dr. Hughes. Their books, Brain Based Parenting (2012) and The Neurobiology of Attachment-focused Therapy (2016) are both in the Norton series on Interpersonal Neurobiology.