Vocabulary In The Early Years: Facts and Myths All Parents Should Know

As a speech pathologist, this topic is always on my mind. But recently I have been examining my son’s vocabulary, as he prepares to enter school.

That’s because I know that when he goes to school full-time he will be entering a new phase in his life. He will enter a world where the demand on his language abilities will be higher.

He will have to:

  • Follow multi-step directions without many cues

  • Learn from a variety of different adults during group and individual contexts

  • Engage in social situations with new peers (some who may be older)

  • Master the academic concepts required for his year.

I know! It seems like a lot for kindergarten!

But this is the reality of what is happening in the classroom.

And having a strong vocabulary is one of the best ways I can prepare him to meet these new challenges.

I’m A Speech Pathologist

vocabulary facts myths from a speech pathologist

As I watch my son play with his friends and chat with us at dinner, using descriptive words, I am not worried. He has had the benefit of having a speechy mom who has been preparing him for this day since the moment he was born.

Yet this time in my life brought to my attention the need to share this knowledge with other parents.

Helping children develop a wide vocabulary in the early years sets the stage for success!

Let’s start off with some basic truths about vocabulary development. Parents deserve to know and I want to put to rest some common misconceptions.

Myths And Facts About Vocabulary

Myth: Babies start learning words when they begin to talk.

As soon as babies are born they start to hear all the sounds in their language. Their brains search for patterns in the way these sounds are put together. These patterns help them understand where words begin and end.

Once they have identified familiar patterns they start to attach meaning to what they are hearing.

That’s when vocabulary learning begins. This can start as early as 5 months old with the recognition of baby’s own name. In a large-scale study, researchers found that 10-month old babies had vocabularies (words they understood) ranging from 11 to 154 words. But, most of these babies had not spoken their first word yet or were only saying a few small words.

This means that word learning (also known as vocabulary learning) starts well before babies have started to talk. Also, this trajectory continues as baby grows up. Young children will have a much larger vocabulary of words they understand compared to what adults actually hear them saying.

Myth: Children that are talking in full sentences have a strong vocabulary.

When a baby says their first words (typically between 9-14 months old) it is pretty simple to keep track of their vocabulary. But, as their vocabularies grow, children start speaking in sentences. Then it can become difficult to know exactly how many words they actually understand. Or in other words, how large their vocabulary is.

In a landmark study researchers found that by age 3 children from a high-socioeconomic status (wealthier) had heard about 30 million words more than those from a low-socioeconomic status (poorer). As a result, by 3 years old these children had vastly different vocabularies.

Children from wealthier homes had an average vocabulary of over 1000 words.

Children from lower-income homes had average vocabularies of 500 words.

Bottom line: because a child can have a conversation with you does not mean they have a strong and diverse vocabulary.

Myth: The amount of vocabulary a child knows has nothing to do with reading.

The relationship between vocabulary and reading comprehension has been around for decades. It is estimated that between 10-18% of children entering school will have difficulty learning to read. Of these children, most will have difficulty with vocabulary, which directly impacts their ability to learn to read and understand what they have read.

On the other hand, children with large vocabularies typically go on to become strong readers. Since vocabulary knowledge plays a key role in understanding the words children hear when they are read to, or when they read to themselves, it is not hard to see why the more words a child knows, the better their reading skills will be.

Fact: The home environment has a direct impact on whether or not a child will develop a wide vocabulary by the time they enter school.

It has long been accepted that the quality of the home environment a child grows up in has a major impact on how well they will develop language (or not). However, it is not as simple as saying a child who grows up in a wealthy home will have a stronger vocabulary than one who comes from an impoverished home. In fact, researchers have found 3 key factors of the home environment that play a central role in language development:

  • The amount of shared book reading between parent and child

  • The quality of child-parent interactions (e.g., the amount and type of words parents use when speaking to a child, as well as following a child’s lead in conversation)

Studies have also shown that these differences in the quality of home environment can be seen in families with children as young as 15 months of age.

frustrated boy reading vocabulary facts myths

Fact: A large vocabulary will have a positive impact on a wide variety of academic subjects such as math and science.

Upon entering school children may have the ability to use everyday words to communicate their message, but may not have the advanced vocabulary expected of them to be able to succeed with the demands of learning at school.

For example, a child who understands the sophisticated words that will appear in math or science instruction such as divide, half, exclude, narrow, dissolve or habitat will be more likely to do better in these subjects.

That’s because they will be able to understand the teacher’s instructions in learning activities more easily since they already know what these words mean, they will be able to use their knowledge of these words to help them understand the meaning of other words they don’t know as they are learning, and they will be able to use their understanding of these words to help them formulate questions to learn more about any given topic.

School is a wonderful place to become exposed to new words and learning in all areas. For children who enter with rich vocabularies, the curriculum will offer many more learning opportunities. For those who enter without the necessary vocabulary, this type of language can be very overwhelming and have a negative impact on learning.

Fact: Children who know more words also learn words more quickly.

Vocabulary learning seems to be one of those resiliency skills with a profoundly cascading effect. From as early as the preschool years this phenomenon can be seen.

Children who have larger vocabularies tend to learn words faster, but children with limited vocabularies tend to learn words at a slower rate. This trend appears to continue all the way through the school years so what begins as a small difference in vocabulary size when children are young, can turn into a monstrous division of skill level by the older years of school.

Myth: Talking to and reading to my child each day is enough to help them develop a strong vocabulary.

Parents and professionals alike would agree that speaking to and reading to children is a fundamental way to help them develop language skills. However, when it comes to ensuring kids have a strong vocabulary, just these basics aren’t enough. Children need to be exposed to a wide variety of new words regularly and it is estimated they need to hear a new word at least 12 times before it becomes integrated into their vocabulary.

In addition, children need to have multiple opportunities to use and explore these new words themselves in different ways. Finally, adults need to help children learn to become active word learners. Teaching them how to use the knowledge they already have to figure out the meaning of new words or to ask questions when a meaning is unclear.

Myth: Teaching a child vocabulary requires special knowledge, teaching skills and takes dedicated time during each day.

vocabulary facts myths make reading easier

I’m hoping that this post wasn’t too daunting for the typical parent out there. My goal was not to frighten people and have them worry about their child’s vocabulary knowledge but to highlight an important topic.

In truth, even though the topic of vocabulary learning can seem big and scary and something left up to only the professionals with multiple degrees, it is not! There are many small things parents can do at home that will go a long way. In fact, you have already begun by reading this article!

How To Get Started Building Vocabulary

To get everyone started helping their child develop strong vocabulary skills TODAY, Talking Together has made a free Word List Tracker available for download here.

Adding even one new word a day (or per week if that is all you can manage right now!) will make a difference and start to put vocabulary learning into your regular daily routine.

I will also be writing a follow-up post to this one entitled 5 Easy Ways to Develop Vocabulary Without Changing Our Busy Lives. You can check back later for that or you can sign up for Talking Together’s newsletter to receive that post straight to your inbox for free as soon as it comes out!

If you are really keen to learn more (and I hope you are!) I recommend the book Word Aware 2: Teaching Vocabulary In The Early Years by Stephen Parsons and Anna Branagan (<—affiliate link). Perfect for parents and early educators that want to make language learning come to life every day for the special children in their lives.

Wishing you and your loved ones happy language learning together ☺

Vocabulary facts and myths


  1. Hoff, E. (2014) Language Development, 5th Ed., Wadsworth, Belmont, CA.

  2. Konza, D., (2010). Understanding the reading process, Research Into Practice, August, 1-8.

  3. Neuman, S. & Wright, T. (2014). The magic of words: Teaching vocabulary in the early childhood classroom, American Educator, Summer, 4-13.

  4. Parsons, S. & Branagan, A. (2016) Word Aware 2: Teaching Vocabulary In The Early Years, Speechmark Publishing Ltd., London, UK.

  5. Rvachew, S. (2010) Language Development and Literacy, retrieved online on April 28, 2017 at http://www.child-encyclopedia.com/sites/default/files/dossiers-complets/en/language-development-and-literacy.pdf

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