Schaffer & Emerson (1964) studied 60 babies from Glasgow at monthly intervals for the first 18 months of life using a longitudinal method.
Schaffer & Emerson found attachments were most likely to form with carers who were sensitive to the baby's signals, rather than the person they spent the most time with.
By 10 months old, most babies have several multiple attachments, including attachments to mothers, fathers, siblings and extended family.
Being sensitive and responsive, including playing and communicating with an infant, is more instrumental in attachment than physical care.
Asocial (birth to 6 weeks) babies give similar responses to objects & people. They show a preference for faces, especially eyes.
Indiscriminate (6 weeks – 6 months) babies have a preference for human company. They also have the ability to distinguish between people but are comforted indiscriminately.
Specific (7 months +) infants show a preference for one caregiver, displaying separation and stranger anxiety. The baby looks to particular people for security, comfort and protection.
Multiple (10/11 months +) attachment behaviours are displayed towards several different people e.g. siblings, grandparents etc.
Separationanxiety is when infants show distress on separation from their caregiver.
Strangeranxiety is when infants show distress when in the presence of unfamiliar people.
The primaryattachment figure is usually who the baby has formed a strong specific attachment with.
Many developmental theories of attachment identify sequences or stages like Schaffer.
Anxiety and distress is a key signal that a child has formed a significant attachment to their caregiver.