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For many years, the phenomenon pertaining to the underlying basis or criteria of language development has remained a debated topic among linguists and psychologists.

Psychologists would describe language acquisition as an occurrence that is heavily and primarily dependent on nurture and environment. In other words, this is to say that children acquire language provided that they are exposed to a speech-rich environment.

On the other hand, although linguists and nativists would agree that the environment of spoken language is imperative for communication attainment, they would also argue that the environment alone is not sufficient or entirely responsible for effective acquisition. 

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Linguists reason that the human brain is innately predisposed to acquire language. Language acquisition manifests itself without ever being taught (Chomsky, 2006). The Poverty of Stimulus states that children are able to acquire rich language systems quickly and effortlessly, even in limited exposures, with no direct teaching (Saxton, 2017). As a result of this innate capacity, the stages in which language is acquired occurs roughly in the same order for all children, universally! These milestones are explained below:

1. Pre-birth: Preparation of the human brain for language acquisition after birth

Language acquisition begins well before a child is born. Babies are initially familiarized with speech-language in the womb. The human ear begins to function at the 3rd trimester or the 7th-month mark of pregnancy (Saxton, 2017). During this period, unborn infants respond to all types of sounds. What is more fascinating is that they can discriminate speech sounds from non-speech sounds. In the womb, babies are more sensitive to their own native languages than foreign ones, as well as make a well-defined distinction between their mother’s voice and others (Saxton, 2017). This phenomenon is one of many natural occurrences that supports the claim that language is hardwired in the human brain.

This stage of language perception/hearing in the womb is essential for language acquisition after birth. Children who are born with congenital auditory impediments or hearing loss are deprived of this stage. As a result, language acquisition is generally delayed by four to five months after birth (DeLuzio, 2020). 

2. Babbling – 7 months of age

At this stage, infants begin to explore the properties of sounds through production. Sounds of early babbling are universal. However, by the time a child reaches the age of 8 months, a drift occurs in the characteristics of babbling (Helms-Park, 2018). Babbling becomes more distinctive. Infants begin to produce sounds that would only occur in their own native languages. A French baby and an American baby will not babble the same, as there are certain sounds that English and French do not share. At this stage, parents should expect their children to go through three phases. They follow:

  1. One consonant and a vowel at a time. Example: “ma”, “da”, “du”, “bi”
  2. Reduplicative babbling. Example: “da-da-da-da”
  3. Non-reduplicative babbling. Example: “ba-du-ba-du”

In these phases, the most frequent vowels and consonant sounds that are produced by English babies are: ‘i’, ‘u’, ‘a’ and ‘b’, ‘d’, ‘g’, ‘m’. Vowels are generally easier to produce than consonants, as they do not require much obstructions in the vocal or nasal tract.

3. One-word (Holophrastic) Stage- 1- 1.5 years old

During this stage, children begin to acquire and produce real words of their native languages. A child in this stage will use single word constructions to communicate. The usage of single-word items is intended to convey full sentences provided the context. As expected, word productions are extremely redundant. The one-word productions have three functions:

  1. Express emotions: “uh-oh”, “bad”
  2. Request a desired action: “up”, “down”, “gimme”
  3. Name objects: “baba” (bottle),“truck”, “doggie”, “mine”

At this stage, children know the meanings of words that they say, as production is often accompanied by finger-pointing (Helms-Park, 2018).

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4. Two Word Stage – 1.5-2 years old

Children usually enter this stage when they have acquired about 50 words. They begin to demonstrate their knowledge of the word order that occurs in their language. English has a SUBJECT VERB OBJECT (SVO) word order. It is very common for production to take the following structures:

  1. Doer + action: “Tommy play”
  2. Action + affected object: “Kick ball”
  3. Possessor + possessed object: “Daddy key”
  4. Negation/Refusal/ Cessation of existence: “No veggie”, “allgone milk”

At this stage, lots of verbs, nouns, and adjectives emerge, as well as intonation! Intonation is a clear indication that children do not perceive speech production as one chunk, but rather individual words coming together to convey a more complex meaning.

5. Telegraphic Stage – 2-2.5 years old

At this stage, children experience a vocabulary spurt or “explosion”. Production is pidgin-like, as grammatical / function words (little words) such as ‘the’, ‘a’, ‘is’, ‘will’, ‘of’, ‘by’, pluralization, tense (past -ed), verb endings/ person agreements (she eat ‘s’) are omitted. During this stage, a child will primarily communicate with content words (verbs, nouns, adjectives) and some pronouns such as ‘me’ and ‘mine’.

Although many function words are missing at this stage, children obey the word order and structure of their language. Considering the English word order (SVO), English speaking children are expected to produce phrases similar to the following sentences:

  • “Want more ice-cream.”
  • “Mommy go bye-bye.”
  • “He go play.”

6. The After Telegraphic Stage – 2.6 + years old

Early in this stage, complete sentences begin to emerge. Imperative and declarative sentences appear first (Helms-Park, 2018):

  1. Imperative (command): “Give me my toy.”
  2. Declarative (Relay information): “That’s my toy truck.”

Coordination (acquired first) and subordination sentences also appear early in this stage, however, they are mastered by 4 -5 years old (Helms-Park, 2018):

  1. Coordination (Two clauses joined in a symmetrical relation): “I am tall, but she is short.”
  2. Subordination (Two clauses joined in a non-symmetrical relation): “When I am older, I am going to be bigger.”

Progression of more complex questions and negatives appear between 2.6- 3.0 years old (Helms-Park, 2018). By children’s 3rd birthdays, they begin to use more grammatical / function words, such as regular plural ‘-s’, endings on verbs ‘-ing’, prepositions (of, in, by), but third person agreement comes a bit later “She loves candy.”  Near the end of this stage, almost everything is acquired between the ages of 5-6 (Helms-Park, 2018).


Given this guideline of language acquisition, parents must note that variations often occur in the rate of language development. A child who may be behind does not necessarily indicate a language impediment. Every child is unique and different. Some may acquire language faster than others. It is always important to be mindful that comprehension of language always precedes production by some months. Language competence does equate to production. Most children who encounter delays in language development, including auditory impediments, usually catch up with their peers by the age of 3 (DeLuzio, 2020).


  • Chomsky, N. (2006). Language and Mind (3rd ed.). Cambridge: Cambridge University Press.
  • Deluzio, J. (2020, January 23). Audition & Spoken Language, and Language Development in Children with Hearing Loss. Toronto, Ontario, Canada.
  • Helms-Park, R. (2018, November). Morphosyntax. Toronto, Ontario, Canada.
  • Saxton, M. (2017). Child Language Acquisition and Development (2nd ed.). Los Angeles: SAGE Publishing.
  • Takahashi, E. (2018, November). The Perception and Production of Speech Sounds. Toronto, Ontario, Canada.
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The author’s views are entirely his or her own and may not necessarily reflect the views of Blub Blub Inc. All content provided on this website is for informational purposes only and is not intended to be a substitute for independent professional medical judgement, advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.

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