A free history of attachment research, read for the sensitive child
- Developments in Attachment Research by Robbie Duschinsky (University of Cambridge) was published by Oxford University Press on 2 June 2025 in open access under a CC BY-NC-ND 4.0 licence. It has five chapters and an epilogue, and the text runs to page 622.
- The book follows several research groups that shaped the study of attachment and caregiving and examines the field as a culture, with its leadership, kinship structures, symbols and conflicts, alongside the growth of its evidence.
- Chapter 1 covers the 1980s: Bowlby, Ainsworth and Mary Main. Chapters 2 to 5 cover Karlen Lyons-Ruth (Harvard Family Pathways Study, MIND study), Jay Belsky (Pennsylvania project, NICHD study of early child care), Marinus van IJzendoorn and Marian Bakermans-Kranenburg (Leiden) and Sheri Madigan (Calgary).
- The Belsky chapter (pages 235–372) closes on his theory of differential susceptibility and his psychosocial acceleration hypothesis. The epilogue asks how and why simplified and misleading understandings of attachment theory became widespread.
Many clients now arrive with an attachment style already assigned to them by a quiz, a podcast or a friend. Robbie Duschinsky's monograph is a history of the research behind that vocabulary, and it ends by asking how the simplified version spread.
Five groups and their quarrels
The opening chapter returns to the 1980s. It argues that the early community was shaped by disagreement more than standard accounts admit, and that Mary Main's key ideas have been at most partially understood. Four portraits follow; Belsky's gets its own section below. Lyons-Ruth's chapter traces the prediction from disorganized attachment to later externalizing problems and the follow-up of her sample as young adults. The Leiden chapter covers meta-analysis, institutional care and the VIPP video-feedback programme. Madigan's chapter describes an adaptation of the AMBIANCE measure for professionals working with families.
Reading Belsky at the desk
I would start with the Belsky chapter and its section on differential susceptibility. In its usual formulation, which is mine here rather than a quote from the book, the theory holds that some children are more affected by their care in both directions: they lose more under harsh care and gain more under good care. For a therapist this changes how a familiar history reads. An adult client who calls herself "the sensitive one" in a harsh family is describing reactivity, which may also make a good therapeutic relationship work harder for her. With the parent of a highly reactive child, that reactivity is an argument for parent work.
The book is free. Read the Belsky chapter and the epilogue first; together they give you the history behind the terms clients bring in.
A child who suffered most in a harsh family may be the one who gains most from good care, and that is worth saying to the adult that child became.
The book follows research groups chosen by the author, so it is a history of those groups rather than a survey of the whole field. It is a work of history of science and offers no assessment tools or treatment protocols. The definition of differential susceptibility given above is the author's summary, not a passage from the book.