By 6 years

Uses complex and compound sentences

Tells longer stories with central character and logical sequences of events, but ending is unclear

Uses all pronouns consistently 

Uses adverbs (e.g., slowly, faster) in sentences 

Stays on topic during conversations​

Understands short stories ​

By 5 years

Speaks using long and complex sentences

​Uses linking words such as 'when', 'so', 'because', and 'if'

Able to narrate with some plot

Retells a familiar story

Ends conversation appropriately​

Provides background information for listener

Understands many concepts 

Follows 3-part commands

Understands time sequence (first, last)

Speech is 100% intelligible

By 2 years

Acquires a spoken vocabulary of around 50 words

Uses 2-3 words combinations consistently

Uses of jargon is decreasing

Speaks with 25-50% intelligibility

Names many familiar objects and makes animal sounds

States toilet needs

Says "no"

Follows simple instructions

Responds to yes/no questions

Knows names of familiar people, objects and body parts

3-6 months

​Begins to babble

Turns head when his/her name is called

Begins to understand some words

0-3 months

​Coos, gurgles, and sighs

Follows moving objects with eyes

Smiles and coos in response to smile/voice

Imitates some sounds, movements or facial expressions

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By 4 years

Speaks in sentences

Asks and answers 'how', 'why' and 'when' questions

Answers 'how much', 'how long' and 'what if' questions

Engages in a simple conversation

Able to narrate with theme and some temporal sequence

Asks direct and indirect requests (e.g., "Would you...?")

Begin to speak using more complex sentences

Can report on past events, reason, express empathy

Able to maintain an interaction

​Use linking words 'and' and 'but' to conjoin sentences

Speaks with 75-100% intelligibility

6-12 months

Babbles with early sounds (m, n, t, d, b, p, y)

Begins to say first words

Communicate with intent using gestures and vocalisations

Responds to simple verbal requests

Responds to "no"

Responds to own name

Understands "Where's mummy/daddy?"


By 7 years

Tells a story with well developed plot and character with sequenced events

Uses most morphological markers consistently​

Begins to use and understand passive sentences

By 3 years  

Acquires a spoken vocabulary of 250-400 words​

Answers and asks wh questions

Uses 3-4 words combinations consistently

Begins to use early grammatical structures 

Speaks with 50-80% intelligibility

Able to narrate in sequences with themes but no plot

Speech& Language Development










































​References:

Pro-ed (2012) Speech and Language Development Chart (Third edition)

Pro-ed (2013) Early Childhood Development Chart

Rhea Paul (2012) Language Disorders from Infancy through Adolescence