Martha G. Welch, MD is a recognized international authority on improved child development and repair of disorders of behavior regulation. She is a specialist in treating disturbed interpersonal relationships, whether between parent and child or husband and wife.

Dr. Welch is a Diplomate of the American Board of Psychiatry and Neurology. She received her Medical Degree from Columbia University College of Physicians and Surgeons and her post-graduate training in both General and Child Psychiatry at the Albert Einstein College of Medicine. Dr. Welch currently serves as Assistant Clinical Professor of Psychiatry at Columbia University College of Physicians and Surgeons in New York City, where she has received a grant to investigate the neuroradiologic and neurophysiologic brain state changes created by the Welch Method.

She is a practicing psychiatrist specializing in child development and parent-child attachment. Dr. Welch is Clinical Director of The Martha Welch Centers for Family Treatment, with treatment facilities in New York City, Greenwich, CT, and Chautauqua, NY.


Howard Steele is Associate Professor of Psychology at the New School for Social Research (NSSR), and Director of Undergraduate Studies in Psychology across the University including Eugene Lang College. He is co-director of the Center for Attachment Research (CAR) in the New School Psychology Department. Dr. Steele is also Honorary Senior Lecturer in Psychology at University College London, where he earned his PhD in 1991 and then worked as Lecturer and from 1999 as Senior Lecturer until 2004 when he took up his post at NSSR. Professor Steele is founding and senior Editor of the quarterly international journal, Attachment & Human Development.

Dr. Steele has published widely on attachment across the life cycle and across generations, including the effects of loss and trauma, in low-risk normative and high-risk clinical populations. Increasingly, his research work has come to focus on caregiver-child relationships in the context of foster care and adoption. Professor Steele continues his work as a consultant on attachment research at the Clinic for Dissociative Studies inLondon, and consults widely on media presentations on the distinct but related importance of mothers and fathers to their children’s psychological development.


Dr. Stanley Feldstein received his PhD from Teachers College, Columbia University in 1961. From 1961 to 1967, he was Research Psychologist with the William Alanson White Institute of Psychiatry, Psychology, and Psychoanalysis, and from 1967 to 1969, he was a faculty member of the Institute. He then moved to the New York Medical College, where he spent two years as Associate Professor of Psychiatry in the Department of Biological Psychiatry. From 1964 to 1968, he was also Research Associate in Psychiatry in the Department of Psychiatry of the College of Physicians and Surgeons, Columbia University. He is presently a Lecturer in that Department. In 1971, he moved to the University of Maryland, Baltimore County (UMBC) as Professor of Psychology and Associate Chair.

Dr. Feldstein's research has taken a number of paths in the course of his career. It is, however, primarily concerned with the extent to which the time patterns of dialogues reflect important psychological information. In 1964, he developed (with Drs. Joseph Jaffe and Louis Cassotta as collaborators) the Automatic Vocal Transaction Analyzer (AVTA) System, a computerized system that listens to conversations and extracts the vocal on/off time patterns of the two participants. He also wrote several computer programs that analyzed the output of the System in terms of a model of adult vocal behavior proposed by Dr. Jaffe. His scholarly work and research has been presented in over 250 chapters and peer-reviewed articles.


Frank M. Lachmann, Ph.D., is a member of the Founding Faculty of the Institute for the Psychoanalytic Study of Subjectivity, andClinical Assistant Professor at the NYU Postdoctoral Program in Psychotherapy and Psychoanalysis. He has contributed over 100 articles to the journal literature, is coauthor, with Joseph Lichtenberg and James Fosshage, of Self and Motivational Systems (The Analytic Press, 1992) and The Clinical Exchange (The Analytic Press, 1996), and Psychoanalysis and Motivation: A New Look (Routledge, 2010). He is the author of Transforming Aggression: Psychotherapy with the Difficult-to-Treat Patient (Aronson, 2000) and Transforming Narcissism: Reflections on Empathy, Humor and Expectations (The Analytic Press, 2008).

A member of the advisory boards of psychoanalytic institutes in Boston, Chicago, Kansas City, Los Angeles, San Francisco, Toronto, and Vienna. Dr. Lachmann received the Distinguished Scientist Award from the Division of Psychoanalysis of the American Psychological Association in 1998. Dr. Lachmann and Dr. Beebe have been collaborating since 1972. They have published many papers together, and they are co-authors of Beebe and Lachmann, Infant Research and Adult Treatment: Co-constructing Interactions (The Analytic Press, 2002).