How are feral children illustrative of C.H.Cooley's looking-glass self?

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Cooley's looking-glass self theory proposes that our sense of self is developed through our interactions with other people. Feral children, who lack social interaction, do not develop a sense of self or consciousness in the way that most humans do. This supports Cooley's idea that social interaction and feedback from others is necessary for the development of consciousness.

How Are Feral Children Illustrative of C