Emerging Sense of Self During Toddlerhood

Self-concept refers to how individuals view their own abilities and traits.

It shapes their self-awareness—the recognition of oneself as a separate individual—and guides actions.

By 3 months, infants begin to show interest in their own image in a mirror, but by 4 months, they typically show more interest in others’ images.

In a self-recognition study, researchers placed a red mark on the noses of children aged 6 to 24 months and observed them in front of a mirror.

Most 18-month-olds and all 24-month-olds touched their own noses after noticing the mark, whereas children younger than 15 months did not.

This behavior shows that these older toddlers had developed self-awareness.

Another sign of self-recognition appears around 20 to 24 months, when children begin using first-person pronouns such as “me” and “mine”.

Between 19 and 30 months, children start using descriptive terms like "big" or "little" and evaluative terms such as "good" or "strong" to describe themselves.

Together, mirror self-recognition, language development, and self-description help children build a clearer sense of who they are.