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Critical Thinking Development: Ages 5 to 9

Critical thinking must be built from a solid foundation. Although children aged five to nine are not yet ready to take on complicated reasoning or formulate detailed arguments, parents can still help their children lay a foundation for critical thinking. 

In order to develop high-level critical thinking skills later in life, five- to nine-year-old children must first make progress along four different tracks: developing basic reasoning skills and interests, building self-esteem, learning emotional management skills, and internalizing social norms that value critical thinking. The individual sections will discuss the importance of these foundational aspects of critical thinking and offer parents guidance in how to support their young children’s development.

1. Logic and Critical Thinking


Critical thinking is different from logical thinking. Logical thinking is like math: it involves formal reasoning skills that can only be learned later in life. In contrast, critical thinking builds on everyday reasoning.

So parents should guide their children’s critical thinking development from a very young age.

Formal logic is an important part of critical thinking, but ultimately critical thinking involves habits and skills going far beyond the domain of logic. Children’s critical faculties, therefore, cannot be built from logical analysis, but rather develop out of everyday reasoning.

There are three main factors to keep in mind in differentiating logic from the everyday reasoning that underpins critical thinking.

First, logic is not a natural human trait. If logic were natural, we wouldn’t have to learn how to reason, and math wouldn’t be considered so difficult in school.

The natural reasoning displayed by children is often founded on sensory experiences and marred by the cognitive biases discussed in the introduction.

Consider this example. Someone says: “If it rains, I’ll take my umbrella with me.” And then a moment later adds: “It’s not raining.” What may we conclude?

The vast majority of people — including both adults and children old enough to understand the question — will conclude that the person will not take an umbrella
In context, that is a reasonable conclusion to draw. 

Logic is not natural to humans and can only be acquired through learning.

But from a purely logical perspective, it does not follow. The fact that if it does rain, the speaker will take an umbrella implies nothing, strictly speaking, about what will happen in the case that it is not raining.

Logic, the cognitive capacity for formal and reliable deduction, is not natural to humans and can only be acquired through learning—and only at an age when the cognitive system and brain development allow for such learning (between ages 12 and 15).

Second, although logic is not natural, it can be taught with varying degrees of success, according to personality, cognitive profile, and so on. Multiple developmental psychology studies since Piaget have shown that our cognitive system can only become proficient in logical analysis later on, and with the correct training.

Third, if parents train children from ages five to nine to make more or less complex logical deductions, no deep knowledge is acquired. At a young age, the cognitive system does not yet have the capacity to discern logical invariables (i.e., the ability to reproduce a line of reasoning in a variable context). 

This is why mathematical principles are only explained to children when they are 13 to 14 years old. But again parents can encourage the basics of critical thinking at an early age by promoting social factors like self-esteem. 


Logic and Brain Development

Complex reasoning predominantly takes place in the prefrontal cortex and areas of the brain devoted to language. Language development is, of course, closely linked to explicit learning, as well as to implicit stimulation.

But reasoning requires more than just language skills. The prefrontal cortex carries out what are known as executive functions. It controls concentration, planning, decision-making, and many other functions. These allow us to break down complex tasks into a series of simpler tasks. Reasoning requires a strategy that breaks things down. The prefrontal lobe is a cerebral zone that only matures neurologically after the age of 20. 

Logic is neither natural nor easy. Its development requires a comfortable handling of language and the capacity for problem-solving in the prefrontal cortex. Where are we now? Where do we want to go? How can we get there?



2. Everyday Reasoning


Although their logical reasoning skills are undeveloped, young children can argue and express opinions. Parents should encourage them. Even though a child’s argument will tend to be based on emotion, the practice can help build a critical perspective and confidence.

Despite the fact that young children may not be able to grasp logical concepts, they still employ everyday forms of reasoning in both their use of language and in problem-solving and decision-making. It is from out of these capacities that critical thinking can begin to develop at this age.


As is readily apparent, 
communication via language is not logical. Natural language does not conform to a formal logical structure. It is contextual, whether we are talking about comprehension or expression. If someone says: “If I had a knife, I would cut my steak,” most people would understand that having a knife makes it possible to cut the steak. However, in formal logic, the sentence means that if I had a knife, I would be obliged to cut the steak. Logical language is systematic and obligatory. But a child learns to speak and to understand in a pragmatic and contextual, not logical, fashion.

Certain communication problems are caused precisely by an overly rigid logical rigor, as in the case of people with Asperger’s syndrome, a type of high-functioning autism. Paradoxically, human communication only works because it is not a purely logical linguistic system. This is one of the reasons why automated translation between languages has been a thorn in the side of artificial intelligence experts since the 1970s.


Logical Proof and Factual Proof

Most real-life problems that we have been grappling with since infancy cannot be formally resolved by logical deduction.

Decision-making is based on a complex mix of different elements: 

  • the cognitive processing of a situation and/or argument

  • intervention, conscious or unconscious, from our memory of similar past experiences, our preferences, and our personality in the broad sense

  • our emotions

This is how a child can choose between two toys or how an adult chooses between buying and renting an apartment. People with ultra-logical cognitive tendencies won’t have enough factors for their reasoning to work with, and may be incapable of making a decision—and therefore, incapable of taking action. Neurological studies, since those undertaken by Antonio Damasio in the 1990s, have shown us that decision-making processes and emotional processes are intimately linked, from both neurophysiological and behavioral perspectives.

Pure logic, besides often producing unfortunate results in the real world, can be a hindrance in a highly complicated universe where decisions require managing multiple factors. This is the main reason why artificial intelligence is only now starting to see results, despite the fact that information technology has been in use since the 1940s.

Computer engineers have needed to overcome their grounding in logical, mathematical, and hypothetical deduction, and to incorporate developments in cognitive science and neurology. Algorithms now operate more like children: they make random decisions, analyze and memorize the outcomes in order to progress, and then correct themselves by discerning both the invariables and the contextual variables. This is called deep learning. 

Children cannot rely too heavily on logic, but they are still able to express opinions based on their experiences, intuitions, and emotions.

This is also how children between five and nine years old operate. They solve many problems and make many choices, without being able to demonstrate (in the purest sense of the word) why their conclusions and choices were correct.

Between the ages of five and nine, therefore, children cannot rely too heavily on logic, but they are still able to to express opinions based on their experiences, intuitions, and emotions. To do this, they need to practice, have good self-esteem, and feel esteemed by others in order to believe they have the right, the desire, and the energy to put their critical thinking to use: in other words, to exist as a thinking and acting subject whose capacities are recognized by others.

At this age, children are able to argue based on things they have experienced and knowledge they have acquired at school or at home, from books, television, or the internet, or by talking with their friends. They are also able to argue with their “heart.” They assume that their emotions are arguments themselves. 

For example, a child might consider that we shouldn’t eat meat because innocent animals shouldn’t have to die. The child’s empathy is the crux of their argument and the strength of their insistence will often be proportional to that of their emotions.

Case in Point

We show children from this age group a drawing of a rectangular flask tipped at an angle, and we ask them: “If I fill this flask roughly halfway, could you draw the water line on the flask?” 

What would be the result? Most children will draw a line perpendicular to the flask’s longitudinal axis. Yet, since this axis does not run vertically but, rather, is at an angle, the line the child draws is not horizontal relative to the ground, as it should be. 

Children err here because their minds are referentially anchored to the flask, just as astronomers for many millennia were fixated on the idea of the earth, and later the sun, as a reference point—before realizing that the universe does not have an absolute reference point.

Even if we explain the error to children—and they say they understand—many will, shortly afterwards, make the same mistake again. Their cognitive system is not mature enough to incorporate the logic behind reference and relativity. The example shows how logical thinking is not natural, but requires a learned ability to step back and remove oneself from immediate engagement with a particular situation. 

3. Preparing Kids to Think Critically

Critical thinking skills for children can be fostered by a parent or guardian from an early age. First, it’s important to understand the basics of how children learn to think and how a child’s mind differs from that of an adult. Critical thinking in their early years prepares children for life’s challenges and allows them to live a productive life.

How to teach critical thinking to your child

Here are four ways you can support your child’s early cognitive development and put them on the path to becoming critical thinkers. Teaching critical thinking may seem daunting, but having a primer on the particular needs of a child can help you better approach this important task.

1. Encourage children not to see everything as centered only on them by involving them in discussions on an array of topics, including current affairs.

Contrary to popular belief, from the age of five—and sometimes even earlier—children like to be involved in discussions, provided they are not drowned in technical vocabulary or formal logic. They also need to feel that adults are interested in what they are saying and that they are being listened to. Adults need to learn to step away from the role of educator and engage children at their level.

It is highly important for the development of critical faculties that children see their thoughts on the world are accepted. By taking those thoughts seriously, we are taking our children seriously and accepting them.

For example, ask five-year-old children whether Santa Claus exists and how they know. Listen to their arguments: they saw Santa at the mall; they know their Christmas presents must come from somewhere. Contradicting them or breaking down their worldview would be a grave mistake. It would fly in the face of our knowledge about cognitive development, and it would disregard their emotional need for this belief. Paradoxically, by letting children formulate their own ideas and worldviews, namely through dreaming and imagination, they will grow happy and confident enough, in time and at their own pace, to move on to more mature ideas.

2. Value the content of what children say.

With encouragement, children will want to express their thoughts increasingly often, quite simply because they find it pleasurable. A certain structure in our brains, the amygdala, memorizes emotions linked to situations we experience. We are predisposed to pursue experiences and situations which induce pleasure, be it sensory or psychological. If a child puts energy into reflection in order to convince us that aliens exist, and we then dismantle their arguments and dreams, we will be inhibiting their desire to participate in this type of discussion again.

For children aged five to nine, the pleasure of thinking something through, of expressing and discussing their thoughts, of feeling language to be a source of joy, are all of far greater importance than argumentative rigor or logical reasoning.

3. Maintain a virtuous circle. 

Children debate and give their opinions. This stimulates their brain, which creates a whole host of connections, which, in turn, improve their abilities and their cognitive and emotional performance. The pleasure of discussion, of having someone listen to your ideas, releases a “flood” of neurotransmitters that promote cerebral development. An atmosphere of kindness and benevolence in which the child feels heard produces neural connections and develops various kinds of intelligence. As the child learns through debate, putting effort into reflective thought and into verbal and bodily expression, the brain evolves and invests in the future. It is spurred on by cognitive stimulation paired with joie de vivre that comes from being heard by others and receiving their undivided attention.

Parents should not hold back from bringing children into discussions and debates.

Gradually, the ability to argue with pertinence, on both familiar topics of reflection or debate and new ones, will increase. Numerous recent studies show that doing well in school is encouraged much more by pleasure and the development of self-esteem than by heavy exposure to graded exercises, which can create anxiety and belittle children. Children are vulnerable and quickly internalize the labels others place on them.

In short, parents should not hold back from bringing children into discussions and debates, keeping to the principles outlined above. Also, be sure to respond to their desire to start discussions within their frame of reference and be sure to take them seriously.

4. Gradually, with time, pleasure, learning, and cognitive and emotional development, it will be possible to encourage children to argue without pressuring them through open-ended questions.  From the age of eight, children can be introduced to metacognition and the adoption of alternative points of view. They should also be trained at this time to understand the difference between an opinion, an argument, and a piece of evidence.

  • An opinion is the expression of an idea that is not, in and of itself, true or false. Children are empowered to express their opinions early on by all the preliminary work on building up self-esteem. “I think they should close down all the schools, so we can be on holiday all the time” is an opinion. A child of five can easily express such an opinion.

  • An argument is an attempt to convince others by offering information and reasoning. A child of eight might argue: “If we close down all the schools, we can get up later. Then we’ll have more energy to learn things better at home.”

  • Evidence are the facts we use to try to prove a point in an argument. Evidence can be highly powerful but it rarely amounts to conclusive proof. When an unambiguous proof is presented, alternative opinions evaporate, provided that one can cognitively and emotionally assimilate the perspective of the person presenting the proof. Something can be proven in two ways. On the one hand, it can be proven through formal reasoning—attainable from the age of nine upwards in real-life situations and, later on, in l more abstract situations. On the other hand, it can be established through factual demonstration. If a child claims that “you can scare away a mean dog by running after it,” proof can be given through demonstration. This leaves no need for argument.

From ages eight to nine, children can come to differentiate and prioritize opinion, argument, and evidence in what they say and hear, provided that their own flawed arguments at age five to six were met with respect and tolerance. This is vital for developing children’s self-esteem and respect for others. It enables them to take pleasure in argument and increases their desire to express themselves more persuasively.

Critical thinking exercises for kids

Case in Point

Hunting—for or against? For a debate like this one, with considerable social implications, focus on these concepts:

1. Teach children to distinguish between:

  • An opinion: I am against hunting…

  • An argument: … because it entails animal suffering and human deaths.

  • Evidence:

    • There are around thousands of hunting accidents each year.

2. Teach children to adopt a counter-argument for practice:

  • An opinion: I am in favor of hunting…

  • An argument: … because it allows us to control the size of animal populations.

  • Evidence: Wild boar populations are high and cause a great deal of damage to farmland.


New Perspectives and Overcoming Biases

4. The Importance of Self-Esteem


Children need self-esteem to think themselves worthy of expressing their opinions. Parents can strengthen their children’s self-esteem by encouraging them to try new things, stimulating their curiosity, and showing pride in their accomplishments.

Understanding the importance of self-esteem, the foundation of critical thinking

Before children can learn to analyze and criticize complicated material or controversial opinions, they need to have a strong sense of themselves. Their capacity to question external sources of information depends on feelings of self-worth and security.

The terms “self-confidence” and “self-esteem” are often used interchangeably. There is, however, a difference between the two, even if they are related. Before we can have high self-esteem, we must first have self-confidence. The feeling of confidence is a result of a belief in our ability to succeed. 

Self-esteem rests on our conscious self-worth, despite our foibles and failures. It’s knowing how to recognize our strengths and our limitations and, therefore, having a realistic outlook on ourselves.

Self-esteem requires an ability to recognize our strengths and weaknesses, and to accept them as they are.

For example, children can have high self-esteem even if they know that they struggle with math. Self-esteem can also vary depending on context. Children in school can have high social self-esteem, but a lower academic self-esteem.

Self-esteem requires an ability to recognize our strengths and weaknesses, and to accept them as they are. Children must learn to understand that they have value, even if they can’t do everything perfectly.

Self-esteem starts developing in childhood. Very young children adopt a style of behavior that reflects their self-image. From the age of five, healthy self-esteem is particularly important when it comes to dealing with the numerous challenges they face. Children must, among other things, gradually become more independent, and learn how to read, write, and do mental arithmetic. This period is key, and children need self-confidence as well. More than anywhere else, it is in the family home that children develop the foundations for self-esteem.

Children with high self-esteem:

  • have an accurate conception of who they are and neither over- nor underestimate their abilities;

  • make choices;

  • express their needs, feelings, ideas, and preferences;

  • are optimistic about the future;

  • dare to take risks and accept mistakes;

  • keep up their motivation to learn and to progress;

  • maintain healthy relationships with others;

  • trust their own thoughts and trust others.

As parents, developing our own self-esteem enhances the development of our children’s self-esteem, as their identity is closely entwined with our own. Our children learn a great deal by imitating us. Modeling self-esteem can therefore be a great help to them. Here are some examples of what we can do:

  • Be openly proud of our accomplishments, even those which seem minor to us.

  • Engage in activities just for fun (and not for competitive reasons).

  • Don’t pay too much heed to other people’s opinions about us.

  • Don’t belittle ourselves: if we’ve made an error or if we aren’t so good at a certain task, explain to children that we are going to start again and learn to do it better.

  • At mealtimes, prompt everyone around the table to say something they did well that day.

  • On a big sheet of paper, write down the names of family members; then, write down next to everyone’s name some of their strengths.

5. Promoting Self-Esteem


To promote healthy self-esteem in children, parents must strike a balance between discipline and encouragement.

The most important thing of all in the development of young children’s self-esteem is our unconditional love for them.

Children must feel and understand that our love will never be dependent on their actions, their successes, or their failures. It is this state of mind that allows them to embrace the unknown and to continue to progress despite the inevitable failures that come along with learning new skills.


Developing Self-Esteem

But be careful not to let unconditional love prevent the imposition of authority or limits. Instead of developing their self-esteem, the absence of limits promotes the feeling in children that they can do no wrong and renders them incapable of dealing with frustration. It is necessary to establish limits and to be firm (without being judgmental). The desired result is only reached if effort and respect are taken seriously.

Self-esteem means loving ourselves for who we are, for our strengths and our weaknesses, and it is based on having been loved this way since birth.

Advice: How to promote the development of a child’s self-esteem

As parents, we have a big influence on our children, particularly when they are young. Here are some ways to help build up children’s self-esteem:

  • Praise children’s efforts and successes. Note that effort is always more important than results. 

  • Don’t hesitate to reiterate to children that error and failure are not the same thing. Show them that you’re proud of them, even when they make mistakes. Reflect with them on how to do better next time.

  • Let children complete household chores; give them a few responsibilities they can handle. They will feel useful and proud.

  • Show children that we love them for who they are, unconditionally, and not for what they do or how they look.

  • Let children express their emotions and inner thoughts.

  • Assist children in finding out who they are. Help them to recognize what they like and where their strengths lie.

  • Encourage them to make decisions. For example, let them choose their own outfits.

  • Invite them to address common challenges (according to their abilities and age).

Pitfalls to avoid

  • Avoid being overprotective. Not only does this prevent children from learning, it also sends them a negative message: that they are incapable and unworthy of trust.

  • Don’t criticize them incessantly. If we’re always making negative comments about our children, and if we show ourselves to be unsatisfied with their work or behavior even when they’re doing their best, they will get disheartened. 

  • If children don’t act appropriately, stress that it is their behavior, rather than their personality, that must change. For example, it is better to explain that an action they may have done is mean, rather than that they are themselves mean.

  • Always be respectful towards children. Never belittle them. What we say to our children has a great impact on their self-image. 

  • Show them we’re interested in what they’re doing. Don’t ignore them. We are still at the center of their universe. 

  • Don’t compare them to their siblings or to other children their age. (“Your four-year-old sister can do it!”) Highlight how they are progressing without comparing them to anyone else.



6. The Role of Emotions


Emotions are an important part of children’s cognitive development, but if emotions become overwhelming they can be counterproductive. Parents should help their children learn how to express their feelings calmly and prevent emotions from becoming a distraction.

Understanding the role of emotions in the development of critical thinking

Although young children may develop skills in language and argument, and benefit from a level of self-esteem allowing them to stand their ground and explore the unknown, the development of their critical faculties will still be limited if they haven’t learned how to manage their emotions.

Emotions appear in a part of the brain called the limbic system, which is very old in terms of human evolution. This system develops automatically at a very early stage. But very quickly, children experience the need to rein in the spontaneous and unrestricted expression of their emotions. These emotions are, of course, closely connected to basic relations to others (and initially most often to one’s parents) and to cultural norms. 

The prefrontal lobe contains the greatest number of neural networks that simultaneously regulate the scope of conscious emotions and their expression in verbal and non-verbal language, as well as in behavior. From the age of five or six, children start their first year of primary school, where, forced to sit for hours on end each day, they must listen to a curriculum designed more around societal needs and expectations than around the desires and emotions of children. Frontal lobe development enables the inhibition of urges and the management of emotions, two prerequisites for intellectual learning and for feelings of belonging in family and society.

The ability to manage emotions has a two-fold constructive impact on the development of children’s critical faculties. First, it enables children to override their emotions, so they may focus their attention and concentrate. This is essential for both cognitive development in general and their argumentative, logical, and critical skills.

Management of emotions also allows us to feel settled and to convince and influence others when we speak.
Paradoxically, children learn that, by managing their emotions (which is initially experienced as repression), they can have an impact on their peers, make themselves understood, and even be emulated. The pleasure they derive from this reinforces the balance between spontaneity and control, and both pleasure in self-expression and respect for others will increase. Self-esteem will therefore progress, also allowing the child to assert his or her will. 

Development of the critical faculties will benefit from a heightened level of self-esteem. But it’s important to remember that this is a balancing act.

If family or social pressures excessively inhibit emotional expression, feelings of uniqueness and self-worth are compromised. In this case, even with otherwise normal (and even excellent) cognitive development, children’s critical faculties can be impeded. A child won’t truly become an individual and the development of his or her critical faculties will therefore be stunted. Such a child is like a mere cell, rather than a whole organ. This lack of individuality is found in the social conventions and education systems established by totalitarian regimes. Highly intelligent, cultured, logical people can, under such regimes, remain devoid of critical thinking skills.

Emotion is the psychological motor of cognition. But in high and uncontrolled doses, emotion can override cognition.

Conversely, if children’s emotions and expressions of emotion are badly managed or not curtailed at all, they will come to see themselves as almost omnipotent. The consequent behavior will be mistaken for high self-esteem. In reality, cognitive and intellectual development will be dampened due to a lower attention span caused by poor emotional management. Logical and argumentative skills will be less developed and what may appear to be “critical” thinking will, in fact, be nothing more than a systematic, unthinking opposition to everything. 

Critical thinking without cognitive and intellectual development does not truly exist. Real, constructive critical thinking requires listening, attention, concentration, and the organization of one’s thoughts. The development of these faculties itself requires good emotional management, which must intensify from around the age of five or six, in order to strengthen learning skills and social life. Above all, parents should not try to snuff out a child’s emotions. Emotions are what give children vital energy, the desire to learn, and the strength to exercise self-control. Emotion is the psychological motor of cognition. But in high and uncontrolled doses, emotion can override cognition.

7. Managing Emotions


Parents should not ignore or simply silence their children when they act out or are overcome with emotion. They should work with them on strategies for coping and discuss how they can more calmly and productively express their emotions.

How to help our children to control their emotions

Our emotions are a part of who we are: we have to learn to manage and accept them. In order to help children manage their emotions, we must set limits (for example, by forbidding them to waste food or lie). However, setting limits on their behavior does not mean setting limits on their feelings.

We cannot stop children from getting angry even if they are forbidden from acting on that anger rather we can coach children in controlling their reactions. Sending them to their rooms to calm down will not prevent them from being upset and frustrated. On the contrary, by conveying to them the idea that they must face their emotions alone, we encourage them to repress their feelings. When children repress their emotions, they can no longer manage them consciously, which means they are liable to resurface at any moment.

An angry child is not a bad person, but a hurt person. When children lose control over their emotions, it is because they are overwhelmed.

These outbursts, when our children seem to have totally lost control of themselves, can frighten us as parents. Indeed, if children habitually repress their emotions, they become unable to express them verbally and rage takes over.

Failing to acknowledge children’s emotions can prevent them from learning to exercise self-control.

Advice: How do children learn to manage their emotions?

Children learn from us. When we yell, they learn to yell. When we speak respectfully, they learn to speak respectfully. Likewise, every time we manage to control our emotions in front of our children, they learn how to regulate their own emotions.

To help children manage their emotions, we should explicitly explain how to do so and discuss it with them.

Even older children need to feel a connection with their parents to manage their emotions. When we notice our children having difficulties controlling their emotions, it is important to reconnect with them. When children feel cared for and important, they become more cooperative and their feelings of joy cancel out bad behavioral traits.

The best way to help children become autonomous is to trust them and to entrust them with tasks and little challenges.

An angry child is not a bad person, but a hurt person. When children lose control over their emotions, it is because they are overwhelmed. Controlling their emotions is beyond their capacities at that particular moment in time and emotional control is something that they’ll build gradually as they mature.

If we continue treating them with compassion, our children will feel safe enough to express their emotions. If we help them to cry and let out their emotions, these feelings of being overwhelmed will go away, along with their anger and aggression.

Is it important to teach children specific language for expressing emotions?

Of course it is! But don’t try to force children to voice their emotions. Instead, focus on accepting their emotions. This will teach them that:

  • There is nothing wrong with emotions—they enrich human life.

  • Even if we can’t control everything in life, we can still choose how we react and respond. 

  • When we are comfortable with our emotions, we feel them deeply, and then they pass. This gives us the sensation of letting go and of releasing tension.

If we actively teach these lessons—and continue to work on resolving our own emotions—we will be happy to find that our children will learn to manage their feelings. It will eventually become second nature to them.


Emotional Management

8. Critical Thinking and Social Life


Critical thinking is a positive social norm, but it requires the support of background knowledge and genuine reasoning skills. Without them, critical thinking can become an illusion.

Parents should balance their encouragement of children’s argumentative skills and self-expression with an emphasis on intellectual rigor.

Taking account of social norms and peer groups

No child grows up in a vacuum. As they develop, children internalize many of the norms and ways of thinking that are dominant in their families, social lives, schools, and society more broadly. Parents should be aware of the positive and negative influences these different spheres can have on their children, and they should know what they can do to expose their children to norms that will foster healthy and independent thinking.

It seems that the right, even the responsibility, to think for oneself and to exercise one’s critical faculties has become increasingly tied to notions of dignity and individuality. More and more we see factors that have historically determined who has the “right” to be critical—age, origin, gender, level of general knowledge, or other implicit hierarchies—fade in importance. 

Thus, it is becoming more and more common for students (with disconcerting self-assurance) to correct their teachers on aspects of history or other issues that are matters of fact. This raises some important questions, notably regarding the role of the educator, the goals of education, and the relationships between generations. 

Our society encourages critical thinking from a very early age. We have insisted on the fact that, for young children, although intellectual rigor is difficult to attain, it is crucial to develop self-esteem and self-affirmation. But we have also seen that from around the age of eight, it is necessary to move towards teaching them basic reasoning skills.

The risk of making the “right to critical thinking” a social norm from a young age is that we lower intellectual standards. If the encouragement of children to think critically is not paired with intellectual progress in other areas, critical thinking is rendered a mere simulation of free thought and expression. This is as true for children as it is for teenagers or adults.

The entire population may feel truly free and have high self-esteem. However, if the intellectual rigor that comes with arguing, debating, and reasoning, is missing from children’s intellectual and social education, the people will be easily manipulated. Giving our children the freedom to exercise their critical faculties must be paired with the demand for intellectual rigor and linguistic mastery, without which “critical thinking” would offer the mere illusion of liberty.

Striking a balance:
For parents today, it is a matter of striking a balance between fostering critical thought from an early age, in spite of gaps in knowledge and logic, and developing our children’s cognitive faculties and knowledge base. Without these faculties of listening, attention, comprehension, expression, argument, and deduction, critical thinking is an illusion, a pseudo-democratic farce, which can lead to a society plagued by ignorance and vulnerable to barbarism.


On the other hand, we cannot simply slip back into old social conventions whereby children were told to simply keep quiet and learn their lessons passively. The only thing this approach ensures is that the child won’t become a troublemaker.

What is needed is an approach that harmonize advances in philosophy and psychology, which consider children as fully fledged individuals, on the one hand, with an understanding of the intellectual immaturity of this child, on the other.

Disagreeing in a civilized manner, in the end, allows us to agree on what matters most.

With the help of an affectionate, attentive, but also sometimes restrictive and guiding parent—who is at once intellectually stimulating, indulgent, and patient with the child’s needs—early development of self-affirmation and critical thinking becomes compatible with growing intellectual aptitude.

This intellectual aptitude is crucial to a healthy social life as well. People lacking this intellectual maturity cannot even disagree with each other productively; they lack the ability to discuss subjects worthy of critical interest, as well as the social and cognitive skills of listening, argument, and logical deduction. Disagreeing in a civilized manner, in the end, allows us to agree on what matters most.

Case in Point

Consider this discussion between two eight year olds.

 – “I saw a show on TV yesterday that proved that aliens really exist. Tons of people have seen them, and they’ve found marks left by flying saucers in the desert!”

– “But there’s no real evidence. Those clues and eyewitness accounts weren’t very specific. Different witnesses described the aliens in very different ways—some said they were little green men, while others said they were big with glowing eyes. And the marks from UFOs could have been formed by strong winds.”

– “Oh, so you think you’re smarter than the scientists on TV, is that it?”

One child declares that a TV show they saw proves the existence of aliens. He or she takes it for granted that what we see on TV is true. The second is educated into a norm that calls claims into question and demands evidence. The first child doesn’t understand the second, because, to him or her, seeing it on TV is proof enough. From this point onward, the discussion can only go in circles. In this case, different social or family norms are incompatible.


Independent Thinking

Case Study 1


Already at a young age children can begin to gain perspective on how they reason. One good way to help them foster this metacognition is by pointing out the variety of different methods available for solving a particular problem. By, for example, seeing the multiple different methods available for solving a math problem, children can begin to think about their own thought processes and evaluate various cognitive strategies. This will gradually open up the world of reasoning to them. They will begin to pay more attention to how they solve problems or complete tasks involving reasoning, instead of focusing only on answering correctly or completing the task. 

How do children calculate 6 x 3, for example? 

There are several ways:

  1. They could add 6 + 6 + 6;

  2. They could recall that 6 x 2 = 12, then add six more to get 18;

  3. They could simply memorize and recall the answer: 18;

  4. They could draw a grid of 6 by 3 units and then count how many boxes are in the grid.

Or they could use one of various other techniques…

Our culture values accurate and precise results but tends to pay little attention to the route taken to arrive at those results. Yet, if children are aware of their train of thought, they will be in a better position to master the technique—to perfect it to the point where they may even decide to switch to another technique if they need to increase their speed, for example. That is why it is important to help children understand the method they are using to the point that they can explain it themselves.

In helping their children with schoolwork or other projects involving reasoning, parents should ask them to explain themselves, make explicit the steps they’re taking to solve a particular problem, and discuss the advantages and disadvantages of their method and alternative methods. The result will be a much deeper understanding not only of the particular task at hand, but also of the practice of reasoning itself.

Case Study 2

Logical Proof and Factual Proof​​

At this stage, we can begin to introduce rudimentary logical concepts and distinctions. In everyday conversation, children have already begun using what we might call “natural logic.” They may, for example, get in arguments, like the one below, in which they draw conclusions based on premises. When children present these types of arguments, parents can intervene to teach basic logical concepts and ask children how a given conclusion might be proven or disproven. 

One distinction appropriate to teach at this age is that between logical proof (proof that draws logical conclusions from certain premises) and factual proof (proof that uses actual facts to prove or disprove a given statement). The following anecdote provides the opportunity for such a lesson.

William and Eve, two children walking their dog in the park, are having a conversation about Labradors:

— “There are two kinds of Labradors—black and golden,” declares William.

— “That’s not true; there are also chocolate Labradors,” replies Eve. “My friend Adam has one.”

— “Well, his dog must not be a Labrador then,” William says.

How might we interpret this conversation?

In terms of logical proof, if Labradors are either black or golden, Adam’s chocolate “Labrador” cannot be a Labrador. That is a logically formulated proof. The reasoning is valid. It is the basic premise, William’s initial declaration that there are only two kinds of Labradors, that is false. It is, therefore, possible for William to draw a false conclusion even though his logic is technically correct.

In terms of factual proof, if we can prove that the chocolate-colored dog has two Labrador parents, we can factually prove that William’s premise is wrong: there are at least three types of Labrador.

There are many opportunities like this one to begin to make explicit the logical steps involved in everyday conversations with your children and to show them that they are already using logic, even if they may not know it. This serves to get them thinking about their own thinking, and it makes the topics of logic and reasoning less intimidating.

Case Study 3

New Perspectives and Overcoming Biases

What is bias?

A bias is a simply a preconceived and unreasoned opinion. Often biases are formed due to upbringing, larger societal biases, or particular subjective experiences. They exist in many forms and can persist into adulthood unless a child builds a firm foundation in critical thinking and reasoning.

How to overcome bias

The following anecdotes demonstrate how parents can use everyday events to help their children better understand and relate to perspectives outside their own. In order to think critically, children must be able to imaginatively and empathetically put themselves outside their own experiences and perspectives. Children thereby begin to come to terms with the limitations their own upbringings and backgrounds necessarily impose on them. 

This is a vital part of metacognition since it allows children to see themselves, their attitudes, and their views as if from the outside. They become better at overcoming biases, prejudices, and errors in thinking. This process also enables them to entertain the perspectives of others and thereby engage in argument and debate in the future with more charity and nuance. Finally, it encourages them to seek out new experiences and perspectives and to develop intellectual curiosity.

In this first anecdote, a child learns to broaden her horizons through an interaction with another child whose experience is different from her own. In the second, a child learns that his attitude toward particular objects can depend strongly on the context in which they are experienced. 

Overcoming Bias Example 1: Fear of Dogs

Jane is eight years old and lives in a small village. Her parents own several animals, including two Labradors. 

Jane’s cousin Max is nine and a half and lives in central Paris.


Max is always happy to visit Jane, and they play together outside, dreaming up adventures and climbing trees. But he is terribly afraid of Jane’s big dogs; whenever they come near him, he screams at the top of his lungs and runs indoors to hide. Jane finds this funny, calling her cousin a “fraidy cat” and devising ploys to lure Max close to the dogs.

Jane does not realize that, unlike her, Max is not used to having animals in his daily environment. She interprets his attitude exclusively from the viewpoint of her own experience.

What would you do if you were Jane’s parents?

At the dinner table, Jane’s mom asks her to stop teasing Max and explains that he is not used to animals because he lives in different circumstances than she does.

She asks Max to tell them what it is like living in the city. Max talks about his daily life and, notably, how he takes the metro by himself to school in the mornings, two stations from home.

The blood drains from Jane’s face: “You take the metro all by yourself? I could never do that, I’d be much too scared of getting lost.”

Her mom says to her: “You see, Jane, you fell into a trap—thinking that your cousin was just like you. We are all different. You need to remind yourself of that in the future because it’s easy for you to forget!”

This focused discussion has given Jane the opportunity to overcome her own egocentrism by realizing that she and Max inhabit different worlds. She, therefore, realizes that even though Max is scared of dogs (whereas she is not), he is capable of things that intimidate her, like taking the metro alone. This allows her to re-examine her way of reasoning through a “meta” example of her own ideas about the world, eventually leading her to change her attitude toward her cousin.

As parents, we should look for and take advantage of opportunities to open up our children to new perspectives, especially with respect to unexamined biases they may have against peers or outsiders. They will gradually learn to identify and guard against the tendency we all have to generalize recklessly from our own limited experience. Moreover, they will develop the capacity to see things from other perspectives and interests outside their own narrow sphere.

Overcoming Bias Example 2: Fear of Nettles

Josh has recently been on a field trip with his class. Before a hike, the teacher warns the students to steer clear of the nettle plants in the area  These “stinging nettles” can cause a nasty itching and burning rash. 

A few days later, at dinner, Josh finds that his parents have prepared a nettle soup. Boiling water makes the nettles safe to touch and eat.  But he refuses to eat it, since his experience tells them to keep nettles as far away from his body as possible— especially his mouth.


Josh vehemently refuses to try the soup at first and insists on having a frozen pizza instead. But his parents are firm with him and show him that the soup poses no danger by eating it themselves. Finally, Josh relents and tries the soup. He finds that it causes him no harm, and, much to his surprise, he actually enjoys it.

Children who do not know that nettles are safe to eat formulate their prejudice against the soup based solely on their experience, which is limited to the nettle’s irritant qualities. These kinds of learning experiences can be good moments for parents to point out to their children how they may falsely generalize their own limited experiences and how those experiences can produce unwarranted biases. These prejudices may stop them from trying out new things that may very well enrich their lives. 

Case Study 4

Developing Self Esteem

Esther and Ali, both five years old, are at a playground, looking at a climbing wall designed for five to 10 year olds.


Esther goes over to the wall, looks at it, and touches the climbing holds. She starts climbing, pulling herself up with her arms and putting her feet on the lower holds to relieve her arms.

When she is about six feet up the wall, Esther stops.

“Go on, Estheryou’re almost there! Come on, just one more push. You can do it!” calls out her father from the bench he is sitting on.

Esther looks at the top of the wall. She wants to make it all the way up, but her hands hurt from clutching the climbing holds. She lets go and lands on the soft covering of the playground.

“Oh—you almost made it,” her father calls out.


Ali’s father goes over to his son: “Do you want to try? Grab onto these with your hands, and then put your feet on the ones at the bottom. Then you move your hands up more, and then your feet—hands and feet… Go slowly; it’ll be tricky to start with. Check where the holds are before you start climbing.”

Ali goes to the foot of the wall and grabs the holds to see what they feel like. He starts climbing, following his father’s advice.

Ali climbs slowly. He is about halfway up the wall, far below where Esther reached. He asks to get down, and his father takes him in his arms and puts him on the ground.

 “Great job, son! That was really good for a first try! I’m proud of you. That wall isn’t easy—it’s for children up to 10.”

In these two examples of the same situation, what is the impact of each parent’s behavior on the child’s self-esteem? What will each child remember from their first try at climbing?

Esther will probably be left with a sense of failure, thinking that she disappointed her father because she didn’t reach the top of the wall on her first try. She may not be willing to try again in the future, and she may hesitate to take on other new challenges.

Even though he didn’t reach as high as Esther, Ali’s first climbing experience will likely be gratifying to him. His efforts have been recognized and encouraged by his father. He may be motivated now to make new efforts in the future, both in climbing and in other challenging new activities.

Case Study 5

Risk Taking

An important part of supporting the development of critical thinking skills at this age is encouraging children to take risks. Parents should beware of being hypercritical when their children make mistakes. They should also be proactive in exposing their children to new and potentially challenging situations. Finally, they should encourage their children to put themselves at risk in these situations, especially when it comes to putting forward arguments or answering questions. When they are (inevitably) wrong, children should be encouraged and supported rather than criticized. Being wrong should not become a source of shame for the child, but an opportunity to learn and grow. Consider the following anecdote.

Eight-year-old classmates Laura and Adam sit next to each other in a theater. Some 60 children, including Laura and Adam’s class, are on a field trip to see a historical reenactment. 

Before the curtain rises, the activity leader presenting the show asks the children: ″Who can tell me the name of the Roman emperor who conquered Gaul?”

Adam, who happens to be an avid reader of a cartoon about history, knows the answer immediately (Julius Caesar) and wants desperately to say it—but is afraid of making a mistake in front of everyone and, as a result, remains silent.

Laura hesitates. Several names spring to mind as she thinks back to what she learned in history class: Nero, Caligula, etc. Finally, a few seconds later, no longer able to restrain herself, she blurts out, “Julius Caesar!”

The activity leader congratulates her and then gets the show started.

In this situation, we see two different attitudes toward the risk of being wrong:

  1. Adam would rather keep quiet than risk giving a wrong answer. We can deduce from this that Adam associates mistakes with something negative that could earn him disapproval or lead to him being mocked—even punished. He has thus pressured himself into thinking that only perfection is acceptable and has therefore reduced his ability to try things out.

  2. Laura, on the other hand, would rather risk being wrong than remain silent. We can deduce from this that she does not feel shame about making mistakes; in any case, her desire to try and the excitement of taking risks outweigh the drawbacks of being wrong.

We learn through trial and error, which is necessary for the development of the ability to reason. Risk-taking and trial and error are vital.

Children’s environments, and notably their parents’ attitudes regarding mistakes, are determining factors in how they approach risk-taking and in whether they allow themselves to make mistakes.

Case Study 6

Emotional Management

In addition to acquiring perspective on their own experiences and their own reasoning, children should, at this age, begin to acquire perspective on their own emotions and to learn strategies for managing their emotions. Without these management skills, children will be continually overwhelmed by their emotions and allow them to compromise their reasoning. The anecdote below can be used as a model to help parents guide their children in learning to express and manage their emotions, and to think clearly in spite of strong emotional reactions.

Seven-year-old Eddie is on vacation by the sea with his parents, who suggest that they all go out and take a boat to a nearby island for a few hours. They can visit the lighthouse there.

Eddie, who is busy playing with his figurines, refuses to get ready for the trip as his parents have asked.

“I haven’t finished playing! I want to stay here,” he exclaims.

“You can play with your figurines at home whenever you want, Eddy, but this boat trip is special. It’s something we can only do on vacation,” argues his mother. “Come on now, hurry up and put your shoes on, and then go and get your bag. Take a jacket as well, please—it can be cold out at sea.”

Eddie’s parents are all ready, and he still has not budged. He carries on playing with his back to them.

“That’s enough now, Eddy. Get up and get ready so we can leave,” orders his father, raising his voice slightly.

Without looking at them, Eddy bursts into tears.

“I don’t want to go on a boat! I’m scared of falling in the ocean! And what if the boat sinks? There are sharks out there! Plus I get scared of swimming if I can’t touch the bottom—if the water is too deep for me,” he says with a quavering voice.

“Oh, Eddy, why didn’t you say so before? I didn’t realize you were worried about the boat. I didn’t even think of that. But you know what? It’s normal to be scared the first time. And the ocean is daunting, that’s for sure. Listen, I’ll tell you what: let’s look at the shipping forecast together. I checked it earlier and it’s going to be a really nice day, with a very calm sea. As for swimming offshore, that’s out of the question! We’ll go swimming at our usual beach when we get back later this afternoon. And we’ll all be wearing life jackets on the boat, so there’s no way you can drown! Are you less worried now?”

“Yes… But I don’t want you to think I’m a wimp…”

“Being scared is nothing to be ashamed of! It’s a normal feeling which helps to protect us from danger. You should always say if you’re scared. I can’t always guess how you’re feeling—you’ve got to tell me!”

In this scenario, after a bit of hesitation, Eddie was able to express his fears. His parents accepted this emotion and drew on it to reassure him with clear, objective facts, helping him to understand the unfamiliar circumstances. This way he could feel completely safe on the boat.

If Eddie had not expressed his fears—because he was afraid of his parents being judgmental, angry, or perhaps even making fun of him—the situation could have taken one of the following turns:

  • Eddie could have categorically refused to go on the trip, and his parents would either have had to force him to come, or drop the plan entirely.

  • Eddie could have obeyed them without saying anything, but the trip would have been ruined by his anxiety.

Although dealing with and expressing emotions may seem far afield from critical thinking, it is a vital precondition of critical and independent thinking that children have the confidence to recognize and acknowledge their emotions. Otherwise, children will be unable to set their emotions aside in order to  consider complicated questions or scenarios in a clear and unbiased way.

Case Study 7

Independent Thinking

What is independent thinking

What does independent thinking mean? Independent thinking is when an individual forms their own thoughts rather than just going along with what others are thinking. They apply their personal experiences, knowledge, and observations to form a personal viewpoint.

Independent thinking vs critical thinking

We can think independently without thinking critically, but we can’t think critically without thinking independently. That is, independent thinking is a precondition of critical thinking. In order to begin assessing information and making judgments objectively, we must first prevent ourselves from being unduly influenced by our peers’ views.

Example of independent thinking

In certain scenarios, children’s developing perspectives on their own beliefs, reasoning, and emotions can combine in the analysis of a challenging source of information. The wealth of media to which children are exposed today can be overwhelming, but these media can also provide opportunities for learning and practicing the skills of critical analysis. Parents can help guide their children in these situations by prompting them with questions and asking children to make their beliefs and reasoning explicit. At this young age, preparation for independent and critical thinking need not interfere with the fantasy life of the child, as the example below shows. 

Six-year-old Tom has just written a letter to Santa Claus. Now he is watching television, flipping between channels until a show about Christmas catches his attention.

Part 1

The TV presenter explains that nowadays children do not believe in Santa Claus the way they used to. Christmas has been totally commercialized. What’s more, red only became the color of Christmas due to the branding of the Coca-Cola company. 

  • First part of the program: “What do those concerned say?” A journalist standing outside a school asks several children their opinion. The children interviewed say that their parents have told them about Santa Claus, but that he does not really exist, at least no more than witches and ghosts do. They say that they know exactly what they are going to get for Christmas and how much it will cost. Their little brothers or sisters may still believe in Santa, but they themselves are not babies anymore. Regardless of whether they’re “naughty or nice,” they know there will always be gifts for them under the tree.

  • Second part of the program: “Santa Claus: salesman.” Images in the background show check-out lines in toy stores, parents with shopping carts full to the brim, others taking photos of the shelves on their phones. We see Santa Clauses of all shapes and sizes in shopping malls, day care centers, in the street, and even sitting in donkey-drawn carriages. A narrator provides statistics on the average amount spent by families on gifts, as well as the percentage of gifts purchased in-store versus online.

Finally, the presenter comes back on the screen and concludes with, “Christmas has lost its magic!” before going to a commercial break.

Part 2

Tom’s father came into the room while the show was on air and has seen part of it. He can tell that his son is both confused and unsettled.

“Why do you believe in Santa Claus, Tom? What are your reasons?”

“Because he’s come every year since I was little. And because he comes at nighttime. Who else could come in the middle of the night? Because he always drinks the hot chocolate we leave him under the tree, and he eats the cookies. Because I’ve seen him more than once, near the Christmas tree at school and in stores. Because no one else could make toys for every kid and deliver them all.”

“Yes, those are very good reasons to believe in him, Tom. And what about at school? Do you talk about Santa with the other kids?”

“The big kids say the same thing as the people on the TV: that he doesn’t exist and that their parents made him up. When I told them there was no way presents could just appear under the tree overnight, they said I was a baby. I don’t talk about Santa anymore because of that.”

“I think you’re right to assert yourself and say what you really think. There’s what they say on TV, what your friends say, and then there’s your own opinion. And it’s important for you to say what you think and defend your point of view. It’s important to listen to other people too, of course, because no one is right all the time. But having your own ideas and expressing them is really important all through your life.”


What would you have done if you were Tom’s father?

Would it have been better to admit the truth about Santa Claus to Tom and contradict his beliefs and imagination? If Tom’s dad had done that, what value would his son have placed on his own reasoning? Would he have dared to defend his opinion in the future? 

During this conversation, the father chose to give weight to Tom’s arguments by giving credit to them and praising the way he expressed his personal thoughts. He did not state his own opinion on the matter, but instead focused the discussion on dealing with clashing points of view and on arguing. He hopes that Tom will now see the value in his own arguments, even if they go against what was said on the television show. Now, the next time he finds himself in a similar situation, Tom will probably be confident enough to express his own opinion on the information he receives.

The repetition of situations such as this should allow Tom’s critical thinking skills to develop. They will reinforce and strengthen his self-esteem and build his confidence in his ability to develop his own thoughts.

This situation may seem counter-intuitive. We usually associate the development of critical thinking with questioning certain beliefs, in this case the belief in the existence of Santa Claus. 

This viewpoint, though, projects our own adult understanding onto Tom. Children of his age should instead be encouraged to express themselves, to be creative in their arguments, and to believe in the value of their own points of view—rather than in the truths that are thrust on them by adults, media, or their friends.


Ages 5 to 9

Complete the quiz to review important points in the guide.

Children are not ready to develop critical thinking skills until they can grasp the concepts of formal logic. (T/F)
What is metacognition?
What are good ways to foster metacognition?
The best decisions are made without input from the emotions. (T/F)
Why is high self-esteem necessary for critical thinking?
Which of the following is NOT a good way to foster high self-esteem in your young children?
How can children’s early social interactions help foster metacognition?
What’s the best way to start building young children’s argumentative skills?
Verify the answers

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