Verbal Classification: How to Find the Common Category

When a child brings home a tennis racket, a football, and swimming goggles, and you realize that all of these are sports equipment, you perform the exact mental operation tested by Verbal Classification.

It’s not about “guessing the word from a picture.” It’s about seeing the invisible connection between seemingly different things.

What is Verbal Classification and Why Is It Tested

Verbal Classification is a CAT4 subtest where a child is given three words and asked to find a fourth that unites them into a single group. It sounds simple, but in reality, it’s one of the most revealing parts of the test.

Why is this important? Because in real life, we constantly need to group information. When someone reads the news and understands that “rising gas prices, factory closures, and growing unemployment” are signs of an economic crisis, they’re using the same skill. Only the words are different.

In school, this skill shows up like this: a teacher gives three examples of biological species, and the student must grasp that they are all mammals. Or: three historical events, and the task is to determine they all occurred in the 18th century.

The key here is not knowledge of specific words, but the ability to extract a common feature. A child might not know what a “cherry” is from a botanical standpoint, but if they understand that all three original words are things that grow on trees and can be eaten, they’ll find the correct answer.

Why Children Make Mistakes: Three Typical Traps

When a child first encounters such a task, mistakes are almost inevitable. And it’s not because they are “stupid” or “don’t know words.” There are three specific traps that trip up even clever children.

First trap: overly specific feature. The child sees the words “sparrow, pigeon, tit” and thinks: “They are all gray.” This is true, but it’s not the category the test considers correct. The correct category is “birds.” A specific external feature (color, size) often obscures a more important one — belonging to a group.

Second trap: functional proximity. The words “plate, spoon, glass” — a child may decide they are all “needed for tea drinking.” And they’ll choose “teapot” as the fourth word. The correct answer is “pot” because all items belong to the category of dishes. The test checks the category, not a situational connection.

Third trap: excess knowledge. Sometimes a child knows too much. For example, with the words “kangaroo, koala, platypus” — a child who loves animals might think: “They all live in Australia.” And choose the corresponding word. But the test checks a more general feature: “mammals” or “marsupials.” Too narrow knowledge can lead to an incorrect category.

💡 Advice: If a child makes a mistake on a task, don’t say “How could you not get that?” Ask: “What feature did you use to group these words?” Often, it turns out their logic was perfectly valid — they just chose a different level of generalization than the test intended.

The Logic of Tasks: From Concrete to Abstract

To help a child, you need to understand how the tasks themselves are structured. They aren’t random — there’s a specific system behind them.

Verbal Classification tasks can be roughly divided into levels. At the simplest level are everyday categories: “vegetables,” “furniture,” “clothing.” These are things a child encounters daily.

The next level involves more abstract categories: “sports games,” “musical instruments,” “units of measurement.” Here, you need not just to recognize an object, but to understand its function.

The highest level involves abstract categories: “states of matter” (solid, liquid, gaseous), “verb forms,” “scientific concepts.” At this level, errors arise not from a lack of word knowledge, but from an inability to abstract from concrete meaning.

How to Train This Skill Without Boring Tests

The good news: Verbal Classification is not an innate ability, but a skill that can be developed. And you don’t need to sit with textbooks to do it.

The most natural way is “odd one out” games. Take four words, where three share a common feature, and one does not. The child must find the “odd one out” and explain why. This is the reverse task of the test, but it develops the same mechanisms.

Next technique: “category store.” Ask the child to imagine they are opening a store. But not an ordinary one — a themed one. For example, “The Store of Everything Round.” Have them name 5-10 items they could sell there. Then change the category: “The Store of Everything Made of Wood,” “The Store of Everything That Can Fly.”

Another powerful tool is creating multi-level categories. Ask: “What group does a rose belong to?” Answer: “Flowers.” “And what broader group do flowers belong to?” — “Plants.” “And plants?” — “Living nature.” This pyramid teaches them to see not just one category, but a whole hierarchy.

💡 Advice: Play these games in the car, in line, or at dinner. Don’t turn practice into a lesson. Five minutes a day in the format “Let’s figure out what a vacuum cleaner, a comb, and a toothbrush have in common” will do more than an hour sitting with tests.

Typical Categories Found in the Test

Knowing which categories are most often tested allows you to purposefully draw attention to them in daily life.

Natural categories: animals, plants, trees, flowers, insects, fish, birds. Seemingly obvious, but children often confuse “insect” with “beetle” or “plant” with “tree.”

Functional categories: things used for cooking (pot, frying pan, knife), for writing (pen, pencil, paper), for construction (hammer, nails, board). Here, understanding purpose is key.

Abstract categories: shapes (geometric figures), colors, sizes, seasons, months, days of the week, units of measurement.

Categories of relationships: synonyms (words with similar meanings), antonyms (words with opposite meanings), parts of a whole (finger — hand, page — book).

💡 Advice: Don’t demand that a child name the category with a textbook word. If they say “these are all things you can eat” instead of “food products,” that’s fine. Understanding the principle is what matters, not the terminology.

The Connection of Verbal Classification with Other Parts of CAT4

This subtest doesn’t exist in a vacuum. It is closely linked with other parts of the test, especially Verbal Analogies. The difference is that in Verbal Classification, the child looks for a common feature, while in Verbal Analogies, they look for the relationship between two pairs of words.

But there is a deeper connection too. The ability to categorize directly influences results in the Non-Verbal batteries (where the same principles apply to pictures), in Quantitative Reasoning (where you need to see commonalities in number sequences), and even in Spatial Ability (where geometric shapes must be grouped by features).

Simply put: if a child does well in Verbal Classification, they are likely to understand the structure of any material well — from the rules of English grammar to the periodic table. If there are difficulties, it’s not a verdict, but simply an indication of which skill to develop.

What to Do If a Child Doesn’t Understand “Common Category”

Sometimes parents complain: “I explain to him that an apple and a pear are fruits, but he still chooses a carrot.” This is normal at the initial stage.

The mistake most often arises because the child doesn’t see the difference between a functional connection (“apple and carrot — you can eat them”) and a categorical one (“apple and pear are fruits, but carrot is a vegetable”).

A simple technique will help: verbalize the process of finding a category out loud. Take three words and say: “Look, these three words are united by the fact that they are... (pause). I know: they are all sweet. But wait, is there anything among the options that is also sweet? This word, candy, is sweet. But then, are all the words from the first group sweet? A banana is sweet, an apple is sweet, but a lemon is sour. So, the feature doesn’t fit. Let’s try differently.”

This kind of verbalization teaches the child not to grab the first union that comes to mind, but to test a hypothesis.

💡 Advice: If a child makes a mistake, don’t correct them immediately. Ask: “Why do you think this is the correct answer?” Listen to their logic. In 90% of cases, there is logic — it just uses a different, unexpected feature. Explain why the test “wanted” a different feature in this task, but praise them for their original thinking.

Practical Summary

Verbal Classification is a test of the ability to see the common in the different. This skill has no “ceiling”: the more a child practices, the better they become at noticing abstract connections between objects, words, and concepts.

No special materials are needed for preparation. What is needed are:

• regular short games (5-10 minutes a day)ON CONFLICT (id) DO NOTHING;
• verbalizing logic out loud;
• attention to how the child thinks, not just the answer they give.

Categorization is something we do every minute: we sort groceries onto fridge shelves, group tasks by importance, categorize people by acquaintance. By developing this skill, you’re helping your child not just pass a test, but better navigate a world where there is more and more information.