Welcome to Cognition and Development!
Hello there! Welcome to one of the most fascinating parts of your Psychology A Level. In this chapter, we are going to explore how children’s thinking processes (their cognition) grow and change as they get older. We’ll look at whether we are born with certain abilities or if we have to learn everything from scratch, and how our social world helps us understand what others are thinking. Don't worry if some of the names like "Equilibration" sound a bit scary—we’ll break them down into bite-sized pieces together!
1. Piaget’s Theory of Cognitive Development
Jean Piaget is the "grandfather" of developmental psychology. He believed that children aren't just "mini-adults" who know less; they actually think in completely different ways than adults do.
Key Concepts: How We Build Knowledge
Piaget argued that children are like "little scientists," constantly exploring their world to build schemas.
- Schema: Think of this as a mental "folder" or a package of information about an object or situation. For example, a child might have a "dog" schema (four legs, furry, barks).
- Assimilation: This is when we fit new information into an existing schema. Example: Seeing a Poodle for the first time and adding it to the "dog" folder.
- Accommodation: This is when we have to change a schema or create a new one because new information doesn't fit. Example: A child sees a cow, calls it a "dog," but is told "No, that’s a cow." They now have to create a new "cow" folder.
- Equilibration: We don't like it when our schemas don't match the world (this is called disequilibrium). Equilibration is the pleasant feeling of balance when our understanding matches our experience.
Piaget’s Stages of Intellectual Development
Piaget believed everyone goes through these four stages in the same order. Mnemonic: Silly People Confide Freely (Sensorimotor, Pre-operational, Concrete operational, Formal operational).
1. Sensorimotor (0–2 years): Babies learn through senses and movement. The big milestone here is Object Permanence—understanding that an object still exists even when you can't see it (like when playing peek-a-boo!).
2. Pre-operational (2–7 years): Children start using symbols (language) but lack logical reasoning. Key features include:
- Egocentrism: Seeing the world only from your own perspective. Piaget used the "Three Mountains Task" to show children think others see exactly what they see.
- Class Inclusion: Struggling to understand that things can belong to two groups at once. Example: If you show a child 5 dogs and 2 cats, and ask "Are there more dogs or more animals?", a pre-operational child will say "More dogs."
3. Concrete Operational (7–11 years): Children can now think logically about physical (concrete) objects. They master Conservation—the understanding that the amount of something stays the same even if its appearance changes (like pouring water from a short fat glass into a tall thin one).
4. Formal Operational (11+ years): Teenagers can think about abstract ideas and "what if" scenarios. They can follow the logic of an argument without needing physical objects to look at.
Quick Review: Piaget believed development is driven by a biological "inner clock" and individual exploration.Common Mistake: Students often confuse Assimilation and Accommodation. Just remember: SS for Same Schema (Assimilation) and CC for Change or Create a schema (Accommodation).
2. Vygotsky’s Theory of Cognitive Development
While Piaget focused on the child acting alone, Lev Vygotsky focused on the social world. He believed we learn from others.
The Zone of Proximal Development (ZPD)
The ZPD is the gap between what a child can do all by themselves and what they can do with a little bit of help from someone more experienced (a More Knowledgeable Other). Vygotsky argued that learning happens best in this "sweet spot."
Scaffolding
Scaffolding refers to the temporary support given to a child. As the child gets better at the task, the "scaffold" is gradually removed.
Analogy: Think of a parent helping a child ride a bike. First they hold the handlebars, then they just hold the back of the seat, and finally, they let go entirely.
Key Takeaway:
Vygotsky believed that language is the most important tool for cognitive development, as it allows us to learn from our culture and peers.
3. Baillargeon’s Explanation of Early Infant Abilities
Renée Baillargeon thought Piaget was a bit too hard on babies! She believed infants know a lot more about the world than Piaget thought—they just don't have the motor skills to show it.
Violation of Expectation (VOE) Research
Baillargeon used the "Violation of Expectation" method. It’s like a magic trick for babies.
1. Babies are shown a "possible" event (something that follows the laws of physics).
2. Then they are shown an "impossible" event (like a toy truck passing through a solid block).
The Result: Infants as young as 3–4 months looked much longer at the impossible event. This suggests they have an innate (born-with) understanding of the physical world, which Baillargeon calls a Physical Reasoning System.
4. The Development of Social Cognition
Social cognition is simply how we make sense of other people. How do we know what they are feeling or thinking?
Selman’s Levels of Perspective-Taking
Robert Selman looked at how children develop the ability to "stand in someone else's shoes." He used dilemmas like "Holly and the Kitten" (Holly promised her dad she wouldn't climb trees, but she sees a kitten stuck in a tree).
As children grow, they move from being totally egocentric to understanding that people can have different perspectives because they have different information, eventually reaching Social and Conventional System Perspective-taking (understanding that society has rules that influence how we act).
Theory of Mind (ToM)
Theory of Mind is the "mind-reading" ability we all use to understand that others have thoughts, beliefs, and intentions different from our own.
- The Sally-Anne Study: This is the classic test for ToM. Sally puts a marble in her basket and leaves. Anne moves the marble to her box. When Sally returns, where will she look?
A child with ToM knows Sally will look in the basket (where she thinks it is). A child without ToM (or many children with Autism) will say Sally will look in the box (because they think Sally knows what they know).
The Mirror Neuron System
Why do we feel sad when we see someone else cry? It might be because of Mirror Neurons. These are special brain cells that fire both when we perform an action and when we watch someone else do that same action.
Analogy: It’s like your brain is "mirroring" or "simulating" what the other person is going through, which helps us feel empathy and understand social cues.
Quick Review Box:
- Selman: Focuses on taking different social perspectives.
- ToM: Focuses on understanding that others have different internal mental states.
- Mirror Neurons: The biological "hardware" that helps us empathise.
Summary Checklist
By now, you should be able to:
1. Compare Piaget (individual discovery) and Vygotsky (social learning).
2. Describe Piaget's 4 stages and concepts like conservation and egocentrism.
3. Explain Baillargeon's VOE research and what it tells us about babies.
4. Discuss how we develop social understanding through perspective-taking, Theory of Mind, and mirror neurons.
Don't worry if this seems like a lot of names—just focus on the "big ideas" first, and the details will follow. You've got this!