rutter et al. (2011) english + romanian adoptee study (ERA)
procedure:
researchers followed a group of 165 romaninan orphans who experienced poor conditions before being adopted in the UK
the longitudinal study tested the extent to which good care can make up for poor early experiences in institutions. physical, cognitive and emotional development has been assessed at 4, 6, 11, 15 and 22-25 years
study also followed a control group of 52 adopted children from the UK
findings
half the orphans showed delayed intellectual development when in the UK. at age 11, recovery rates were related to their age at adoption:
adopted before 6 months = IQ of 102
after 2 years = mean IQ of 77
these differences continued to be apparent at 16
findings and conclusions
frequency of disinhibited attachment related to the adoption age
apparent in those adopted after 6 months: clinginess, attention seeking + indiscriminate affection to strangers
rare in children adopted before 6 months
findings support Bowlby's view that there's sensitive period in the development of attachments - failure to form an attachment before 6 months (+ after 2 years) appears to have long lasting effects
Zeanan et al (2005) Bucharest early intervention project (BEI)
procedure:
used SS to assess attachment in 95 romanian children aged 12-31 months who had spent most of their lives in institutional care
they were compared to a control group of 50 children who never experienced institutional care
zeanan - findings and conclusions
only 19% of institutionalised group were securely attached (74% of controls)
44% of institutionalised group had characteristics of disinhibited attachment (20% of controls)
effects of institutionalisation:
disinhibited attachment = such children tend to be equally friendly and affectionate towards people they know well or strangers. may be an adaptation to multiple caregivers
damage to intellectual development = institutionalised children often show signs of intellectual disability. this effect is not as pronounced if the children are adopted before 6 months