What Makes Me?
At around a child’s second birthday, many children recognise themselves in a mirror or in a photograph. In Western cultures, from the age of 18 months to 3 years of age, infants start to display self-awareness through the use of the word "me" or "mine". This self-sense isn’t a passive, self-reflective discovery, but is often the result of effort, particularly in rivalry with others. It arises from striving in the face of obstacles.

These are the second steps in establishing a full sense of self, the acquisition and elaboration as "self-as-object" or "me", now often referred to as the "categorical self". This aspect of self concerns the qualities that define oneself as a person, e.g. gender, name and relationships with others. Once a child has gained a certain level of self-awareness (of the existential self) he or she begins to place herself (or is placed by others) into a set of categories. This aspect of self is the most influenced by social factors, since it is made up of social roles (such as being a student, a sister, a friend) and characteristics that come from a comparison with others (such as trustworthiness, shyness or sporting ability). Social context is an important feature in self-development.

Self-esteem
Measuring self-esteem is difficult. We might feel good about ourselves in one aspect of our lives, but not so good in others. One way of measuring self-esteem in children is to ask questions about how they feel in the different aspects of their life, such as: scholastic competence; athletic competence; social acceptance; behavioural conduct; physical appearance.

How we feel about ourselves overall may bear little or no relationship to how we feel about ourselves in these different areas. It’s the importance we place on our areas of achievement or failure that leads to an overall level of self-esteem. A child who is anxious to succeed at sport would have a high level of self-esteem if she did well at sport, but low self-esteem if her performance in sport was poor, even if the child was good academically or socially. The match between our aspirations and performance is one important factor in determining self-esteem. Another factor which might influence a child’s overall feeling of self-esteem is the regard in which they are held by "significant others", people whose opinion the child values, such as parents, teachers and peers.