Attachment theory: WACE Year 12 Psychology Unit 4
“Explain attachment theory and attachment styles, with reference to the work of Bowlby, Ainsworth and Harlow”
Attachment is the strong emotional bond between an infant and a caregiver; Bowlby argued it is innate and forms an internal working model for later relationships, Ainsworth's Strange Situation identified secure, insecure-avoidant and insecure-resistant styles, and Harlow's monkey studies showed infants prefer contact comfort over feeding alone.
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Attachment is not part of the SCSA Psychology ATAR Year 12 syllabus (Unit 3: Memory and learning, and Unit 4: Motivation, wellbeing and health, taught since 2024), so this page is not examined in the WACE Psychology ATAR exam. Bowlby, Harlow and Ainsworth are now in the Year 11 syllabus (Unit 1: Biological and lifespan psychology). The nearest Year 12 idea is the need for relatedness in self-determination theory.
What this dot point is asking
SCSA asks you to define attachment, explain Bowlby's theory, describe Ainsworth's attachment styles and her method, and use Harlow's evidence. The marked skill is correctly classifying an attachment style from described behaviour.
What attachment is
Attachment is an enduring emotional bond between an infant and a primary caregiver that provides the infant with security and a base from which to explore. John Bowlby proposed that attachment is innate and adaptive, having evolved because infants who stayed close to a caregiver were more likely to survive.
Bowlby introduced two key ideas.
- Monotropy: infants form one special attachment, usually to the primary caregiver, which is qualitatively different from other bonds.
- The internal working model: the first attachment becomes a mental template for what relationships are like, shaping the child's later friendships and adult relationships.
He also argued there is a critical or sensitive period in the first years for forming attachments, and that prolonged disruption (maternal deprivation) could harm later development.
Harlow's monkey studies
Harry Harlow tested whether attachment is based on feeding or on comfort. He raised infant rhesus monkeys with two surrogate mothers: a bare wire mother that dispensed milk and a soft cloth mother that gave no food.
The monkeys spent most of their time clinging to the cloth mother and ran to her when frightened, going to the wire mother only to feed. This showed that contact comfort, not food, was the basis of attachment, challenging the earlier view that infants bond simply because a caregiver feeds them.
Harlow's monkeys preferred the soft cloth surrogate that gave no milk over the wire surrogate that fed them. This demonstrated that the emotional security of physical comfort, not feeding, drives attachment.
Ainsworth's Strange Situation and attachment styles
Mary Ainsworth developed the Strange Situation, a structured observation in which an infant is observed through episodes of separation from and reunion with the caregiver, and the arrival of a stranger. From infants' reactions she identified attachment styles.
- Secure attachment: the infant explores using the caregiver as a base, shows some distress at separation, and is comforted and happy on reunion. Linked to sensitive, responsive caregiving.
- Insecure-avoidant attachment: the infant shows little distress at separation and avoids or ignores the caregiver on reunion. Linked to unresponsive or detached caregiving.
- Insecure-resistant (ambivalent) attachment: the infant is very distressed at separation and seeks contact on reunion but also resists comfort, appearing angry. Linked to inconsistent caregiving.
The Strange Situation is Ainsworth's controlled observation used to assess infant attachment by recording responses to separation, reunion and a stranger. The infant's exploration, separation anxiety, stranger anxiety and reunion behaviour are used to classify the attachment style.
Evaluation
Attachment theory is highly influential, informing childcare, adoption and parenting practice. However, the idea of a single critical period and monotropy has been challenged, since infants often form multiple attachments and bonds can form later than Bowlby claimed. The Strange Situation has also been criticised as culturally biased, because what counts as secure varies across cultures with different child-rearing norms, linking this topic to cross-cultural psychology.
Reading a reunion
In a Strange Situation, an infant plays happily while the caregiver is present, cries when the caregiver leaves, and quickly settles and returns to play when the caregiver comes back.
This pattern, using the caregiver as a secure base, distress at separation and comfort on reunion, is secure attachment. If the infant had ignored the returning caregiver, it would be insecure-avoidant; if it had sought yet resisted comfort while remaining distressed, it would be insecure-resistant.
Why this matters
Attachment shapes emotional development, later relationships and resilience, and understanding it improves caregiving and intervention for at-risk children. It connects to Piaget's account of cognitive growth and to Erikson's first psychosocial stage of trust versus mistrust.
- Confusing the insecure styles
- Avoidant infants ignore the caregiver on reunion; resistant infants seek but reject comfort while staying distressed.
- Misreading Harlow
- His monkeys preferred the cloth mother that gave no food, showing comfort beats feeding as the basis of attachment.
- Overstating the critical period
- Later evidence shows infants form multiple attachments and bonds can form beyond Bowlby's strict critical period.
- Ignoring culture
- A strong answer notes the Strange Situation may be culturally biased, since secure behaviour varies with child-rearing norms.
Exam-style questions
Questions in the style of SCSA exam questions on this dot point, each with a worked answer. They are written by ExamExplained unless tagged "Past paper"; the year shows the paper a question is modelled on.
Original6 marksDescribe Ainsworth's Strange Situation procedure and the three attachment styles it identified, including the caregiving each style is associated with.Show worked answer →
A 6 mark response needs the procedure plus the three styles and their caregiving.
- Procedure
- A structured observation in which an infant is observed through episodes of separation from and reunion with the caregiver, and the arrival of a stranger, scoring exploration, separation anxiety, stranger anxiety and reunion behaviour.
- Secure
- The infant uses the caregiver as a base, shows some distress at separation and is comforted on reunion; linked to sensitive, responsive caregiving.
- Insecure-avoidant
- Little distress at separation and avoidance of the caregiver on reunion; linked to unresponsive or detached caregiving.
- Insecure-resistant (ambivalent)
- Very distressed at separation, seeks but resists comfort on reunion; linked to inconsistent caregiving.
Markers reward the method described and each style correctly paired with its reunion behaviour and caregiving style.
Original7 marksExplain Bowlby's attachment theory and discuss how Harlow's monkey studies provided evidence about the basis of attachment.Show worked answer →
A 7 mark extended response needs Bowlby's theory and Harlow's evidence linked.
- Bowlby's theory
- Attachment is an innate, adaptive bond that evolved because infants who stayed close to a caregiver were more likely to survive. Bowlby proposed monotropy (one special attachment) and an internal working model (the first attachment becomes a template for later relationships), plus a critical or sensitive period for forming attachments.
- Harlow's evidence
- Harlow raised infant rhesus monkeys with a bare wire surrogate that gave milk and a soft cloth surrogate that gave none. The monkeys clung to the cloth mother and ran to her when frightened, feeding from the wire mother only briefly.
- Link
- This showed contact comfort, not feeding, is the basis of attachment, challenging the view that infants bond simply because a caregiver feeds them and supporting Bowlby's claim that attachment serves an emotional, security-providing function.
- Conclusion
- Markers reward naming monotropy and the internal working model, describing Harlow's surrogates, and concluding that comfort beats feeding.