Final answer:
At around 2 to 2 1/2 years old, children can identify pictures of themselves, indicating self-recognition.
Step-by-step explanation:
At around 2 to 2 1/2 years old, children can identify pictures of themselves, indicating self-recognition. This milestone is a sign of cognitive development and self-awareness. By this age, toddlers can also follow simple commands, mimic actions, and demonstrate object permanence.