Marla dabs a small dot of red lipstick on 20-month-old lia’s nose. when put in front of a mirror, lia touches her nose, indicating the development of

Leah is indicating the development of self-awareness.

Explanation:

In 1972 Beulah Amsterdam of the University of North Carolina published a study that toppled decades of research and kicked off self-awareness. The study procedure was simple: 88 babies aged 6 to 24 months were placed in front of a mirror, all of them had a small red spot on their noses. Then the mothers would point to the baby's reflection in the mirror and ask who the mirror was. The researchers watched the babies' behavior during the tests.

Only babies ages 20-24 could recognize themselves in the mirror. These babies pointed to the red spot on their own noses. This strongly suggests that they recognized the image as their own, became aware of self, so much so that they pointed to the roaring stain on their own noses.

Accordingly, we can see that when Lia touches the red spot on her nose she is demonstrating that developing self-awareness.

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