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Dec 11, 2025
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Cognitive development is all about how our thinking and mental abilities change as we grow from infants into... Show more
Ever wonder why toddlers think a toy disappears when you hide it? That's cognitive development in action! Cognitive development refers to the changes in thinking and mental processes that occur as children grow from infants to adolescents.
Jean Piaget revolutionized how we understand children's thinking by organizing cognitive development into four distinct stages. Each stage represents a fundamentally different way that children understand and interact with the world around them.
The stages progress in a specific order, with each one building upon the skills developed in the previous stage. Think of it like leveling up in a video game - each level requires mastering new skills and abilities!
Think About It Consider how your thinking has changed since elementary school. What kinds of problems or ideas can you understand now that would have confused you back then?
During the sensorimotor stage (birth to 2 years), babies explore the world through their senses and physical actions. One major achievement during this time is developing object permanence - understanding that things still exist even when you can't see them.
The preoperational stage brings exciting new abilities! Kids can now use symbols and engage in pretend play, turning a cardboard box into a spaceship or a blanket into a superhero cape. However, children at this stage show egocentrism - they struggle to see things from others' perspectives and tend to focus on just one aspect of a situation at a time.
You can spot preoperational thinking when a young child believes a tall, thin glass contains more liquid than a short, wide one, even if they contain exactly the same amount. They focus on height alone rather than considering both dimensions.
Fun Fact Next time you're around a 3-4 year old, try asking them what a cat would see if it was sitting across from them. Many will describe what they see, not what the cat would see!
Around age 7, children enter the concrete operational stage, where logical thinking emerges. Kids now understand conservation - that quantity stays the same despite changes in appearance (like the same amount of water looking different in various containers).
During this stage, children can mentally reverse actions and classify objects in multiple ways. They can understand that their pet is both a dog AND a mammal at the same time - a more sophisticated type of thinking than younger children can manage.
The final stage, formal operational , is where you're probably at now! This stage brings the ability to think abstractly and consider hypothetical situations. You can reason about abstract concepts like justice or freedom, and consider "what if" scenarios that don't actually exist.
Challenge Yourself Try this formal operational thinking exercise "If all glorks are blorks, and no blorks are zorks, can a glork be a zork?" Your ability to solve this logic puzzle showcases your advanced cognitive development!
Piaget's theory isn't the only explanation for how thinking develops. Some researchers point out that cultural backgrounds and individual differences affect cognitive development in ways Piaget didn't fully address.
Lev Vygotsky offered a different view, emphasizing how social interactions and culture shape thinking. His concept of the zone of proximal development (ZPD) describes the gap between what you can do alone versus what you can achieve with guidance from someone more knowledgeable.
Think about how a teacher or tutor helps you understand a difficult math concept through scaffolding - providing just enough support to help you succeed, then gradually reducing that support as you gain skills. This process illustrates Vygotsky's ideas about how social interaction promotes cognitive growth.
Real-World Connection When you're stuck on a difficult homework problem and someone gives you hints rather than the answer, they're operating in your zone of proximal development!
Understanding cognitive development helps teachers design lessons that match students' thinking abilities. For example, abstract physics concepts might confuse younger children, while hands-on experiments work better until they reach the formal operational stage.
These theories also help professionals create effective interventions for kids with learning difficulties. By identifying which cognitive skills need support, specialists can develop targeted strategies to help children succeed academically.
The information processing approach examines specific mental skills like attention, memory, and problem-solving. This perspective helps explain why you can concentrate longer and remember more information now than when you were younger.
Looking Ahead The next time you interact with children of different ages, notice how their thinking differs from yours. Can you identify which stage of cognitive development they might be in based on how they solve problems?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
2
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Need to know terms for developmental psychology.
PsychologyExplore Lawrence Kohlberg's theory of moral development, detailing the pre-conventional, conventional, and post-conventional stages. This summary covers the aim, methodology, and key findings from his longitudinal study on moral reasoning in children and adolescents, highlighting the evolution of ethical principles across different cultural contexts.
PsychologyIn class notes
AP PsychologyThis know covers everything you may need to know about Jean Piaget & his theory of Cognitive development, as well as explanations of each step of cognitive development
AP PsychologyThese notes are on Chapter 1 of Intro to Psychology, and within the notes are some additive notes from the professor during lecture.
PsychologyExplore the intricate relationship between Theory of Mind (ToM), social cognition, and autism spectrum disorder (ASD). This summary covers key concepts such as Selman's stages of social development, the role of mirror neurons in empathy, and the implications of ToM deficits in individuals with ASD. Ideal for psychology students seeking to understand cognitive development and social interactions.
PsychologyApp Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Cognitive development is all about how our thinking and mental abilities change as we grow from infants into teenagers. This topic helps explain why younger kids think differently than older ones, and why you're able to understand more complex ideas... Show more
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Improve your grades
Join milions of students
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Ever wonder why toddlers think a toy disappears when you hide it? That's cognitive development in action! Cognitive development refers to the changes in thinking and mental processes that occur as children grow from infants to adolescents.
Jean Piaget revolutionized how we understand children's thinking by organizing cognitive development into four distinct stages. Each stage represents a fundamentally different way that children understand and interact with the world around them.
The stages progress in a specific order, with each one building upon the skills developed in the previous stage. Think of it like leveling up in a video game - each level requires mastering new skills and abilities!
Think About It: Consider how your thinking has changed since elementary school. What kinds of problems or ideas can you understand now that would have confused you back then?
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
During the sensorimotor stage (birth to 2 years), babies explore the world through their senses and physical actions. One major achievement during this time is developing object permanence - understanding that things still exist even when you can't see them.
The preoperational stage brings exciting new abilities! Kids can now use symbols and engage in pretend play, turning a cardboard box into a spaceship or a blanket into a superhero cape. However, children at this stage show egocentrism - they struggle to see things from others' perspectives and tend to focus on just one aspect of a situation at a time.
You can spot preoperational thinking when a young child believes a tall, thin glass contains more liquid than a short, wide one, even if they contain exactly the same amount. They focus on height alone rather than considering both dimensions.
Fun Fact: Next time you're around a 3-4 year old, try asking them what a cat would see if it was sitting across from them. Many will describe what they see, not what the cat would see!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Around age 7, children enter the concrete operational stage, where logical thinking emerges. Kids now understand conservation - that quantity stays the same despite changes in appearance (like the same amount of water looking different in various containers).
During this stage, children can mentally reverse actions and classify objects in multiple ways. They can understand that their pet is both a dog AND a mammal at the same time - a more sophisticated type of thinking than younger children can manage.
The final stage, formal operational , is where you're probably at now! This stage brings the ability to think abstractly and consider hypothetical situations. You can reason about abstract concepts like justice or freedom, and consider "what if" scenarios that don't actually exist.
Challenge Yourself: Try this formal operational thinking exercise: "If all glorks are blorks, and no blorks are zorks, can a glork be a zork?" Your ability to solve this logic puzzle showcases your advanced cognitive development!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Piaget's theory isn't the only explanation for how thinking develops. Some researchers point out that cultural backgrounds and individual differences affect cognitive development in ways Piaget didn't fully address.
Lev Vygotsky offered a different view, emphasizing how social interactions and culture shape thinking. His concept of the zone of proximal development (ZPD) describes the gap between what you can do alone versus what you can achieve with guidance from someone more knowledgeable.
Think about how a teacher or tutor helps you understand a difficult math concept through scaffolding - providing just enough support to help you succeed, then gradually reducing that support as you gain skills. This process illustrates Vygotsky's ideas about how social interaction promotes cognitive growth.
Real-World Connection: When you're stuck on a difficult homework problem and someone gives you hints rather than the answer, they're operating in your zone of proximal development!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Understanding cognitive development helps teachers design lessons that match students' thinking abilities. For example, abstract physics concepts might confuse younger children, while hands-on experiments work better until they reach the formal operational stage.
These theories also help professionals create effective interventions for kids with learning difficulties. By identifying which cognitive skills need support, specialists can develop targeted strategies to help children succeed academically.
The information processing approach examines specific mental skills like attention, memory, and problem-solving. This perspective helps explain why you can concentrate longer and remember more information now than when you were younger.
Looking Ahead: The next time you interact with children of different ages, notice how their thinking differs from yours. Can you identify which stage of cognitive development they might be in based on how they solve problems?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
2
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Need to know terms for developmental psychology.
PsychologyExplore Lawrence Kohlberg's theory of moral development, detailing the pre-conventional, conventional, and post-conventional stages. This summary covers the aim, methodology, and key findings from his longitudinal study on moral reasoning in children and adolescents, highlighting the evolution of ethical principles across different cultural contexts.
PsychologyIn class notes
AP PsychologyThis know covers everything you may need to know about Jean Piaget & his theory of Cognitive development, as well as explanations of each step of cognitive development
AP PsychologyThese notes are on Chapter 1 of Intro to Psychology, and within the notes are some additive notes from the professor during lecture.
PsychologyExplore the intricate relationship between Theory of Mind (ToM), social cognition, and autism spectrum disorder (ASD). This summary covers key concepts such as Selman's stages of social development, the role of mirror neurons in empathy, and the implications of ToM deficits in individuals with ASD. Ideal for psychology students seeking to understand cognitive development and social interactions.
PsychologyApp Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Algebra
Overige
Algebra 1