learning to read Archives

5 Findings That Prove Words Are Remembered in Phonological Memory

phonicsorg on June 27, 2024

To read fluently, the brain pulls from a large sight word vocabulary that we’ve built over time. Sight words make the reading process easy, automatic, and meaningful as we string together words we’re already familiar with. But how are sight words remembered? Furthermore, how does the brain store, process, and retrieve so many words from memory as we read?

The fascinating answer has much to do with phonological memory. There have been many discoveries that prove how sight words are stored and what this reveals about reading development. In this article, we look at some of the most interesting findings that prove how our word-reading memory functions—and why it’s not based on visual memorization.

How is Reading Fluency Developed?

Dr. David Kilpatrick, a renowned researcher in the science of reading, provides compelling evidence that sight words are not memorized as whole visual units as previously thought among educators. Instead, words are stored in our phonological memory, the part of the brain that processes speech sounds.

In his book Equipped for Reading Success, Dr. Kilpatrick explains the process of how words are remembered. In short, for children to become strong readers, they must develop three things.

Alphabetic Principle — The understanding that alphabetical letters (and letter combinations) represent individual sounds in spoken language.
Phonic Decoding Skills — The ability to apply knowledge of letter-sound relationships and effectively sound out (decode) unfamiliar words, letter by letter.
Orthographic Mapping — The process of repeatedly connecting spoken words to the spelling of their written words, resulting in permanent word memory over time. Orthographic mapping relies on two things:
1. Letter-Sound Proficiency
2. Phonemic Proficiency

As Dr. Kilpatrick explains, “Oral words are made up of sequences of oral sounds. Written words are strings of letters designed to represent those sounds. A word’s pronunciation (phonology) and meaning (semantics) are connected in memory with the word’s spelling (orthography), so when the printed word is seen, the pronunciation and meaning are instantly accessed. There is no guessing or sounding out the word. The word just effortlessly pops into your mind.” (Equipped for Reading Success, p. 38-39).

What is Phonological Memory?

Phonological memory refers to the part of our brain’s memory system that stores and retrieves speech sounds.

It plays an important role in reading development because to read words, a reader must know how to match visual letters with the sounds they represent. Then, they must decode multiple speech sounds—each pulled from phonological memory—and blend them together to reveal the whole word. Their knowledge of the whole word is also stored in phonological memory.

The letter sounds, pronunciation, syntax, and meaning of words all come from this phonological memory system, enabling beginner readers to sound out and comprehend words in print. Then, through orthographic mapping, this memory system stores the now-familiar words. Readers can easily recognize mapped words which then builds reading fluency. This is the “phonological filing system” as Dr. Kilpatrick calls it.

Proof That Words Are Remembered in Phonological Memory

In research on reading development, there’s plenty of evidence that word recognition is not based on visual memory alone. Rather, words are stored in phonological memory—the part of memory that relates to verbal language. In his book, Equipped for Reading Success, Kilpatrick illustrates examples of this evidence. Here is a summary of the key findings.

1. We Can Read Different Fonts and Typestyles

As literate individuals, we can read texts in various fonts and styles that we’ve never encountered before. This is one of the simplest facts that demonstrate word-reading memorization is not visual.

For example, we can read:

Mixed-case words (sPeLLiNg ThAt’s LiKe tHiS)
Different fonts (serif, sans-serif, bold, skinny, bubbly, squiggly, etc.)
Capital letters (ALL CAPS LIKE THIS) and lowercase letters (all lowercase like this) in various contexts
Different handwritings—from a doctor’s sloppy scribbles to a stranger’s unique print
Cursive and formal scripts

There’s no possible way a reader has been previously exposed to every style of text they will ever read. If words within an unfamiliar or hard-to-read piece of print have not been saved to visual memory, how can the reader decode them with ease? We know that most words are not stored in memory as whole visual units. No matter what font we read, our brains pull from phonological memory to decode new (and even barely legible) print styles.

2. We Know That Visual Memory Differs from Word Memory

The field of cognitive science has discovered that visual memory and word memory operate differently in the brain. The average literate adult can verbally identify words in print faster than they’re able to name visual objects in pictures. For example, if you compare the speed at which adults would say words for everyday objects (“house,” “phone,” “car,” etc.) based on reading the word aloud or identifying the object in a picture, the word recall speed is faster in reading.

Children with reading disorders have shown similar scores to proficient readers on visual memory tests, despite having significantly lower scores in word memory. If reading was dependent on visual memory for word recall, why would children score the same for visual tests but fail word-reading tests? This rules out a visual-based word memory.

Even more surprising is the finding that deaf individuals—despite achieving normal visual memory scores and having no visual impairments—typically struggle to obtain expected reading proficiency for their age. It’s estimated that one in three deaf students graduates high school with a reading level at or below third grade (Center on Literacy and Deafness). This hints at the importance of verbal (phonological) language in the development of word-reading memory.

3. We Correlate Sight Words With Phonemic Awareness

Sight words include any word that a reader is familiar with and can recognize by sight, with no need for decoding. There is a lot of correlation shown between phonemic awareness and sight words, whereas there is very little correlation between visual memory and sight words.

4. We Forget Words in Working Memory, Not Phonological Memory

Think about a time when you were trying to explain something in a conversation but you forgot the specific word to describe something. You know the meaning of the word and the point you’re trying to make, and yet you can’t remember the actual word for what you’re saying. You might stammer, “What’s the word…? It’s on the tip of my tongue!” but your mind goes blank.

This brief memory lapse does not happen when reading text that contains words we already know. For example, say you’re trying to remember the word “simmer” when verbally explaining the process of cooking something on the stovetop. You can’t remember the word that means not quite a boil but maintains cooking at a high temperature. Alternatively, if you were to read a recipe that stated, “Simmer on low for 20 minutes,” you’d have no problem recalling the word or what it means.

Why would we forget words in working memory but not in phonological memory? Word recall is not set in working memory. It has to do with phonology and the process of orthographic mapping.

5. We Have a Limited Capacity for Visual Memory

Although it’s been previously assumed that whole-word memorization is a required process for reading, our brains cannot store so many visualizations—at least not accurately. Research on visual memory has found that human memory is incapable of storing more than 30,000 to 60,000 words for retrieval.

When trying to remember a new address or phone number, what do you do? Most likely, you read the numbers and then repeat the string of digits either out loud or silently in your head. Quick, grab a piece of paper or your cell phone—write it down before you forget! If we could imprint text onto visual memory, this process would be much easier. We wouldn’t need to repeat the digits until we could offload them from our working memory.

Consider the fact that all of the above examples reveal that we use “visual input” to process text initially. However, we do not use visual storage to “memorize” the visuals we see. Instead, we rely on our knowledge of phonemic awareness, phonological memory, and sight words.

Understanding Phonological Memory: Help Children Learn to Read

Why does all of this matter? Knowing the role and function of phonological memory in reading development is crucial for effective literacy instruction. By understanding how words are decoded, remembered, processed, and retrieved, you can prioritize the necessary and effective phonics strategies when helping children learn to read. It’s highly advised you avoid whole-word memorization strategies–such as memorizing large lists of high-frequency words or “analyzing” the outer shape of a word–because these are common practices that are ineffective.

Learn more about evidence-based phonics instruction at Phonics.org where we explain reading science with practical applications for families and teachers.

Methods of Effective Decoding in Reading

phonicsorg on February 8, 2024

When children are learning to read, they must be taught how to “sound out” letters and blend them together to form words. If you’re a parent or teacher, for example, you’ll likely hear your child put together the word ‘dog’, saying /d/ /o/ /g/ … “dog!”

This process is called decoding.

Decoding is an important practice in reading development and one that is required for literacy. By definition, decoding is the translating of printed words into speech by sounding out each letter to form the word.

Some children pick up decoding quickly and easily, whereas others struggle to decipher new words. It can be a frustrating phase for a child but it doesn’t have to be.

To help your phonics students master this crucial skill in their literacy journey, here’s what you should know about effective decoding in reading.

Learning Effective Decoding Strategies

Decoding is an aspect of systematic phonics instruction. To understand these strategies, children should already have some phonemic awareness skills, including the ability to blend individual sounds into words.

1. Letter Sounds

While not an explicit decoding strategy in itself, learning the alphabet and letter sounds is the precursor to decoding. Children must be able to identify letters in print correctly and correlate the appropriate sounds to each letter. If a child struggles with early decoding methods, they may still need to develop their understanding of how letter sounds (phonemes) are represented by letters (graphemes).

2. Simple to Complex

Begin decoding instruction by teaching children to read simple words and then move to more complex words. For example, many reading programs begin with consonant-vowel-consonant (CVC) words like ‘cat’. Once the child can read these types of words with ease, they can start to practice decoding words with consonant blends like ‘sand’ or ‘blast’.

Introducing a complex word like ‘giraffe’ or ‘yacht’ when a child is just learning to decode can be frustrating! Building decoding skills in a step-by-step way helps children strengthen their competence and confidence when learning to read.

3. Blending

To make sense of new words, children combine letter sounds to form the full word. This is called blending. As an example, when a child sees the word ‘map’ for the first time, they must identify the letter and sounds in the word and then put them together to read the word ‘map.’

There are multiple methods of phoneme blending. The easiest way to blend is called continuous blending, or connected phonation. This strategy works well with continuous sounds like /m/ that can be held or elongated. Continuous blending is where the sounds are blended together without stopping in between. For example, reading the word ‘moss’ may sound like ‘mmmmmmmmoooooooooosssssssssss’. The sounds can be repeated and sped up to read words.

Blending is used in early reading but remains an important skill for life! It’s one of the most empowering skills in literacy development. Even through adulthood, readers use blending to decipher advanced, unfamiliar words and expand their vocabularies.

4. Chunking

Sometimes children come across familiar parts of a word with a new prefix or suffix. A child may know the word ‘want’ but come across the word ‘unwanted’ for the first time. They may recognize ‘want’ but then segment the sounds -un and -ed to then blend the whole word, ‘unwanted.’

As readers learn more advanced words that contain multiple syllables, this strategy—called chunking—can be used as a way to help decoding. Building a child’s understanding of affixes will support their ability to break a word into its smaller parts. It can be used to help them demonstrate spelling patterns, read longer words, and notice root words.

5. Syllable Splitting

Also called syllabication, syllable splitting helps children read longer words when decoding. The word ‘definition’ can be a complex word to decode for the first time, so breaking it down into syllables may make it easier to pronounce and understand: de-fi-ni-tion, pronounced /de/ /fi/ /ni/ /shun/.

Some children may need help with syllables in the decoding process. Using lines or symbols to split syllables can help a student visualize the correct pronunciation.

Strategies to Help Kids Practice Decoding

Like all aspects of phonics instruction, decoding should be taught explicitly and systematically while still being approachable and engaging for students.

To build the necessary decoding skills for a child, try to make it fun! Use games, activities, songs, and interactive stories to instill these important reading techniques.

As a teacher or parent, model correct decoding strategies for your child or students and don’t hesitate to guide them when they get stuck. For a hands-on learning experience that supplements classroom instruction, use an educational phonics app that includes fun decoding exercises or games.

Common Decoding Challenges and Mistakes

Every child learns to read at their own pace, so don’t worry if a student faces decoding challenges. It’s expected that they’ll make mistakes, especially during early reading. As reading skills grow, many children may struggle with irregular words, digraphs, or silent letters at first.

Reading is a sophisticated skill that takes time, explicit instruction, effective practice, and lots of encouragement. Acknowledge your child’s struggles and strengths. Let them know it’s okay to mess up and try again. Remind them that they’re still learning and celebrate their dedication to getting better.

If a student really struggles or falls behind in their decoding skills, you can seek insight from a phonics educator or reading specialist who uses proven instructional methods. There may be an underlying issue that needs to be addressed before the student can progress in their literacy development.

Resources to Teach Decoding Skills in Phonics Instruction

When kids learn decoding in a systematic way, they build foundational literacy skills. Mastering these skills at each new level of reading is an exciting, empowering experience that every child deserves.

Whether you’re helping your kindergartener practice decoding at home or teaching a class of third graders more advanced words, you need to know how to provide explicit instruction in decoding. There are helpful resources available that equip children to take the next necessary step toward becoming literate, lifelong students.

To learn more educational tips for decoding, reading, and writing, explore the resources at phonics.org!