Vocalizes pleasure and displeasure sounds (laughs, giggles, cries, or fusses)
Makes noise when talked to
Repeats the same sound
Uses a different cry to indicate different needs
Uses the phonemes: /b/, /p/ and /m/ in babbling
7-12 months
Understands "no-no"
Babbles (says "ba-ba-ba" or "ma-ma-ma")
Tries to communicate by actions or gestures
Uses speech sounds rather than only crying to get attention
Responds to simple requests
Responds to own name
Recognizes words for common items
Uses a large variety of sounds when babbling
Uses sound approximations
Imitates some adult speech and intonation patterns
Uses nouns almost exclusively
Has an expressive vocabulary of 3-5 words
Understands simple commands
13-18 months
Attends to a book or toy for about two minutes
Follows simple directions accompanied by gestures
Answers simple directions accompanied by gestures
Answers simple questions nonverbally
Points to objects, pictures, and family members
Makes request for more of desired item
Omits some initial consonants and almost all final consonants
Produces mostly unintelligible speech
Receptively identifies 1-3 body parts
Follows simple commands
Has an expressive vocabulary of 5-20 words or more (mostly nouns)
Combines gesture and vocalization
19-24 months
Follows simple commands without gestures
Points to simple body parts such as "nose"
Understands simple verbs such as "eat", "sleep"
Correctly pronounces most vowels and /n/, /m/, /p/, /h/, especially in the beginning of syllables and short words. Also begins to use other speech sounds.
Asks for common foods by name
Makes animal sounds such as "moo".
Starting to combine words such as "more milk".
Has an expressive vocabulary of 50-100 or more words
Has a receptive vocabulary of 300 or more words
Starts to combine nouns and verbs
Begins to use pronouns
Maintains unstable voice control
Answers "What's that?" questions
Enjoys listening to stories
Is approximately 25-50% intelligible to strangers
2-3 years
Knows about 50 words at 24 months
Knows some spatial concepts such as "in" and "on"
Knows pronouns such as "you", "me", and "her"
Knows descriptive words such as "big" and "happy"
Speech is 80% intelligible by 3 years
Understands one and all
Verbalizes toilet needs
Requests items by name
Identifies several body parts
Asks 1 to 2 word questions
Uses 4 to 5 word phrases
Has an expressive vocabulary of 500 or more words
Has a receptive vocabulary of 500-900 or more words
Uses approximately 27 phonemes
Mastered the following sounds: /p/, /b/, /t/, /d/, /k/, /g/, /f/, /m/, /ng/, /n/, /w/, /h/
Answers simple questions
Begins to use more pronouns such as "you" and "I"
Speaks in two to three word phrases
Uses question inflection to ask for something (e.g., "My ball?")
Begins to use plurals such as "shoes" or "socks" and regular past tense verbs such as "jumped"
3-4 years
Groups objects such as foods, clothes, etc...
Identifies colors
Uses most speech sounds but may distort some of the more difficult sounds such as /I/, /r/, /s/, /sh/, /ch/, /y/, /v/, /z/, /th/. These sounds may not be mastered until age 7 or 8.
Uses consonants in the beginning, middle, and end of words. Some of the more difficult consonants may be distorted, but attempts to say them.
Able to describe the use of objects such as "fork", "car", etcâĦ
Has fun with language. Enjoys poems and recognizes language absurdities such as, "Is that an elephant on your head?"
Expresses ideas and feelings rather than just talking about the world around him or her
Uses verbs that end in "ing", such as "walking", "talking"
Answers simple questions such as "What do you do when you are hungry?"
Repeats sentences
Follows 2 and 3 step commands
Asks and answers simple questions
Uses 5-7 words in sentences
Has 1800-2000 word receptive vocabulary
Uses 1200-1500 or more spoken words by 4 years
Speech is 90% intelligible
Masters 50% of consonants and blends
Appropriately uses "is", "are", and "am" in sentences
Tells 2 events in chronological order
Uses some contractions irregular plurals, future tense verbs and, conjunctions
4-5 years
Understands spatial concepts such as "behind" and "next to"
Understands complex questions
Speech is understandable but makes mistakes pronouncing long, difficult, or complex words such as "hippopotamus"
Describes how to do things such as painting a picture
Defines words
Lists items that belong in a category such as animals, vehicles, etc...
Answers "why" questions
Understands concept of numbers up to 3
Recognizes 3-4 colors
Counts to 10 by rote
Has receptive vocabulary of 2500-3500 words
Listens to short, simple stories
Uses sentences of 6-8 words
Has an expressive vocabulary of 2000 or more words
Enjoys rhymes
5-6 years
Understands time sequences (what happened first, second, third, etc...)