Lilianne is beginning to develop a fear of strangers and will reach for her mother when she sees someone who is unfamiliar. It is likely that Lilianne has also just

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Lilianne's behavior is consistent with the development of a sense of object permanence, which typically emerges around 8-9 months of age. This is the understanding that objects continue to exist even when they are not visible. Lilianne's fear of strangers may be related to her growing awareness that people she does not know can also exist when they are not present in her immediate sight. Conservation, egocentrism, and secure attachment are all developmental milestones that are typically achieved earlier in infancy and are not directly related to Lilianne's fear of strangers.

Lilianne Is Beginning to Develop a Fear of Strangers and Will