Institutionalization is found to influence childhood development negatively - deprivation is not receiving suitable emotional care from a primary attachment figure, and privation is a total lack of care so there's no ability to form an attachment Bond
Rutter's longitudinal study of 165 Romanian orphans found that children adopted after 2 years old showed more disinhibited attachment, delayed physical emotional and intellectual development, and in some cases quasi autism tendencies
The continuity hypothesis suggests individuals' future relationships will follow a pattern based on the internal working model developed from their infant attachment