As Umberto is always distressed when his mother leaves him and happy to see her when she returns, this kind of attachment between the mother and the child is known as secure attachment.
In psychology, a secure attachment is often classified by the children who show some distress when their caregiver leaves but are able to compose themselves quickly when the caregiver returns. The kids with a secure attachment feel protected by their caregivers and know that they can depend on them to return.
In essence, the theory of secure attachment explains how the parent-child relationship emerges and provides influence on subsequent behaviors and relationships.
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