A strength of research into the effects of institutionalisation is its real-world application. Studies of Romanian orphans have highlighted the negative impacts of institutional care, leading to improvements in childcare practices. For instance, introducing key workers ensures each child in an institution has consistent caregivers, reducing the likelihood of disinhibited attachment—a negative outcome identified in Rutter’s ERA study—and promoting secure attachment formation. This enhances the value of institutionalization research by demonstrating its practical impact on childcare services.