What to know
View photos and videos of developmental milestones that most children do by fifteen months of age. Milestones are listed by area of child development.
Social/Emotional
Copies other children while playing, like taking toys out of a container when another child does
Shows you an object she likes
Claps when excited
The child in this video shows that she is excited by clapping, a 15-month social/emotional milestone.
Hugs stuffed doll or other toy
Shows you affection (hugs, cuddles, or kisses you)
Language/Communication
Tries to say one or two words besides “mama” or “dada,” like “ba” for ball or “da” for dog
In this video, the child tries to say one or two words besides “mama” or “dada,” like “ba” for ball or “da” for dog
Looks at a familiar object when you name it
The child in this video looks at a familiar object like her cup when her mom asks where her cup is, a 15-month language/communication milestone.
Follows directions given with both a gesture and words. For example, he gives you a toy when you hold out your hand and say, “Give me the toy.”
The child in this video follows directions and gives her mother the toy when her mother gestures and asks for the toy, a 15-month language/communication milestone.
Points to ask for something or to get help
The child in this video is pointing to ask for something or to get help, a 15-month language/communication milestone.
Cognitive
Tries to use things the right way, like a phone, cup, or book
Stacks at least two small objects, like blocks
In this video a 15-month-old stacks at least two small objects, like blocks, which is a 15-month milestone.
