Attachment

Bowlby's claim, radical at the time, was that an infant's bond to a caregiver is a primary behavioural system with its own evolutionary function — proximity to a protector — and not a learned association with food.

He drew on ethology, particularly imprinting studies, and on observations of children separated from parents in hospitals and institutions, to argue that separation distress is an adaptive response rather than a spoilt one.

Before Bowlby, a baby's attachment to its mother was widely explained as a side effect of feeding.

Devmark’s reading — not a quotation from the book

Against both psychoanalysis and behaviourism, Bowlby insisted that real events in a real relationship — not fantasy, not reinforcement schedules — shape development. That reorientation is the reason the field exists in its current form.

The practical consequences were substantial: hospital visiting policies, residential nursery practice and later childcare research all moved as a result of this work and the films made with James Robertson.

This is the scientific source text, not a popular account. It is long, technical and written for researchers; the internal working model and the secure-base concept are developed here but at academic length.

Mary Ainsworth's Strange Situation work supplied the empirical typology that most people now mean by attachment styles, and it came after this volume. For practical application, read the later popular literature and treat this as the origin.

This is the origin, not the introduction; the familiar attachment styles come from Ainsworth, later.

Devmark’s reading — not a quotation from the book

The prevailing accounts before Bowlby both explained the infant's bond as secondary: psychoanalysis derived it from oral gratification, learning theory from association with feeding. Bowlby's claim that the bond is primary — a behavioural system in its own right, with its own function and its own development — was the break, and it is why both establishments received the work badly.

His method was to bring animal behaviour research into human developmental psychology: imprinting in birds, and the primate work in which infant monkeys separated from their mothers preferred a soft surrogate to the wire one that fed them. The second result was devastating to the feeding-based account and Bowlby used it accordingly.

Offered food from wire and comfort from cloth, the infant chose comfort. That result ended an argument.

Devmark’s reading — not a quotation from the book

Bowlby's formal apparatus comes from cybernetics rather than psychoanalysis: attachment behaviour as a system with a set-goal — a tolerable distance from the caregiver — activated by distance, fear, illness or strangeness, and terminated by proximity. This is what makes the theory testable, and it is the part most popular accounts omit entirely.

The idea that the caregiver functions as a base from which to explore reconciles two behaviours that look opposed: a securely attached child explores more, not less, because the availability of return is what makes venturing tolerable. Attachment in this account is the precondition for independence rather than its opposite.

The clearest consequences were institutional. Filmed evidence of what happened to small children left alone in hospital wards contributed directly to the abandonment of restricted parental visiting, and the theory reshaped policy on residential care and fostering. Few psychological theories have altered daily institutional practice this directly.

Bowlby's earlier emphasis on the mother specifically, and on the damage of separation, was pressed harder than the evidence supported and was used politically against women's employment. A substantial reassessment in the following decades distinguished deprivation from privation, established that multiple attachments are normal, and documented cultural variation in what secure attachment looks like.

This is the source, not a guide: long, technical, and addressed to researchers. Read it if you want to see the argument actually made and the evidence actually weighed, and be aware that the popular adult-attachment literature that borrows its vocabulary is a considerable distance from what is in this volume.