How Can I Tell if My Child Is Reading or Guessing From Pictures?

Reading is decoding when your child can use the letters in an unfamiliar word to work out what it says. Picture-guessing happens when they rely mainly on the illustration, first letter, memory, or what would make sense in the sentence.

In 1907, psychologist Oskar Pfungst investigated Clever Hans, the Berlin horse whose owner, Wilhelm von Osten, believed he could solve arithmetic by tapping a hoof. The result mattered because Hans often gave the right answer. Pfungst found that the horse was responding to tiny physical cues from people who knew the answer. When the questioner did not know the answer, or Hans could not see them, his success fell away. His account, Clever Hans (The Horse of Mr. von Osten), remains a useful reminder: a correct answer does not always show the skill we think it shows.

A child who says “cat” while looking at a picture of a cat may have read it. They may also have used the picture, the first sound, and a well-practised word from memory. The calm way to tell is to change one source of help at a time.

Watch what happens with an unfamiliar word

Choose a short decodable word your child has not practised recently, such as “mop,” “sun,” or “ship,” depending on the sounds they know. Cover the picture first. Ask them to point to each letter or letter group, say the sounds, then blend them together.

A reader who is decoding may pause, stretch sounds, blend again, or correct themselves after looking more closely. That effort is useful evidence. A fast guess that starts with the right letter can still be a guess.

Try a harmless switch. Place “cat” and “cap” beside each other, or “ship” and “shop.” If your child says the same word for both, they may be using the overall shape or the first letter. If they notice the last sound changes the word, they are attending to the print.

This does not need to feel like a test. Keep it to two or three words, then move on. The goal is to see which information they use, not to catch them out.

Separate the picture from the print

Pictures belong in books. They build meaning, vocabulary, and motivation. They can also supply a very convincing answer before a child has looked closely at the letters.

Read a page together, then cover the illustration with your hand or a blank sheet. Ask, “What part of this word helped you?” A child who points to “sh” in “ship” or notices the ending in “jumped” is showing you something concrete. “I knew because it has a boat picture” tells you the picture did more of the work.

Sentence context can do the same thing. In “The dog can run,” many children can predict “run” without reading it. Replace it with another word that fits less neatly, such as “The dog can nap,” and see whether they check every letter. Context should help a child confirm a word after decoding, especially in longer reading. It cannot reliably replace decoding.

The same principle sits behind The Score That Could Not Tell You Where Reading Came Apart. A score can tell you that something went right or wrong. Watching the route to the answer tells you what to practise next.

Look for repair, not perfect speed

Strong early readers make mistakes. The encouraging sign is what they do next.

Listen for a child who notices that a guess does not match the letters, returns to the word, and tries again. They might say “b... bike,” then stop at the “r” and revise to “br...” That correction shows attention to print. Praise the repair: “You checked the letters and fixed it.”

Be cautious when a child races through a familiar book but struggles with the same sound pattern in a new word. Familiar books can be partly carried by memory. That is normal. Add short new texts with patterns your child is learning, alongside beloved rereads.

If the struggle is frequent, keep the practice small and predictable. One sound pattern, a few words, and a short sentence are enough. Spoken instructions and large, clear letter tiles can help pre-readers focus on the sounds without turning the moment into a worksheet.

Build habits that make the letters matter

When you read together, use prompts that direct attention gently:

• “Show me the part that says /sh/.”
• “What sound does this word start with?”
• “Does your guess match the last letter?”
• “Let’s slide the sounds together.”
• “That sentence makes sense. Now check that every letter agrees.”

Avoid asking “What would make sense?” as the first move with a word your child can reasonably decode. It invites the same hidden-cue problem Pfungst uncovered with Hans. A plausible answer can look impressive while the print has barely been used.

Give context its proper place after the letters have done their job: “You read it as ‘cap.’ Does ‘cap’ make sense in this sentence?” That sequence builds both accurate word reading and comprehension.

The useful evidence is often quiet: a finger moving across three sounds, a second look at an ending, a child changing “pin” to “pig.” Those are the moments to notice. They show your child is learning to get the word from the page.