By the age of 2, most children are ready and eager for some regular play time with others their age. During her time together with another child, your 2-year-old can develop a sense of personal identity by comparing herself and her family to others. She can begin to learn the push and pull of friendship as she sharpens her communication skills. And, of course, she'll have fun. Here are some ways you can help:
From The Parents Answer Book: From Birth Through Age Five, by the editors of Parents Magazine.