Age-by-Age Guide to Baby Friendships

Birth to 11 months

  • Babies begin reaching for each other.
  • When one baby cries, another often will join in.
  • Children may single out another baby who appeals to them and smile back and forth, almost as if the other child is a favorite toy.
  • Babies begin to understand the concept of interaction -- the idea that you do this, I do that, you do this, I do that.

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