Final answer:
Children exhibit self-recognition, early self-esteem, and autonomy at 15-24 months, as they begin to establish their self-concept and independence.
Step-by-step explanation:
The phase of self-development that includes self-recognition, early self-esteem, and feelings of autonomy typically occurs at the age of 15-24 months (b. 15-24 months). During this time, a child begins to exhibit a clear sense of self. As described by psychologists, this is when toddlers recognize themselves in the mirror—a pivotal moment in the development of self-awareness. For instance, the mirror test demonstrates a child's ability to recognize the red dot painted on their nose and subsequently touch their own nose in response to this surprise. As they progress towards 36 months, children can identify themselves in photos and are more involved in making choices, such as selecting their clothing, which further fosters a sense of autonomy and independence.
Erikson's theory of psychosocial development highlights the importance of this stage, as the toddlers work on resolving the conflict between autonomy versus shame and doubt. The success in achieving autonomy and independence contributes significantly to a child's positive self-concept, which continues to develop as they grow older.