List of Skills by Age

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1-2 Months

No observable skill

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2-4 Months

No observable skill

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4-6 Months

No observable skill

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6-8 Months

No observable skill

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8-10 Months

Vocalizes when asked a question

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10-12 Months

Responds to “Who’s that?” with a word or word approximation (e.g. “mama”)

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12-15 Months

Responds to a yes/no question with head movement

Responds to “Where is” questions by pointing to a familiar object or person

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15-18 Months

Responds to requests for clarification (e.g., “huh,” “what?”)

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18-21 Months

Responds to “What is…” questions

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21-24 Months

Answers simple open-ended questions (e.g., “What do you want?")

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24-27 Months

Points to an object when asked, “Which one is…” (a cow, big, etc.)

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27-30 Months

Answers variety of simple questions asked by another accurately

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30-33 Months

Responds to 33% of questions asked by adults

Understands “What...doing?” questions (e.g., "What is the baby doing?")

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33-36 Months

Understands questions about objects, people and basic routines

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36-42 Months

Understands “how many,” “whose,” and “why” questions

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42-48 Months

Answers “when” and “how” questions

Responds to requests for clarification most of the time

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48-54 Months

Answers open ended questions, such as “What can you tell me about….?”

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54-60 Months

Understands “What happens if...” questions