By Editor 
Children generally develop thinking and learning skills in a predictable sequence, though individual timelines vary based on inherited tendencies and environmental experiences.
As children acquire language, it acts as a tool to organise their thoughts, allowing them to apply basic logic, solve problems, and formulate their own ideas. Additionally, researchers have noted that brain activity changes as children learn to reason about what other people might be thinking.
Key Points: Piaget’s theory of cognitive development
Swiss psychologist Jean Piaget proposed that children advance through four universal stages of cognitive development in a fixed order.
Maturation and Experience: Moving from one stage to the next requires an appropriate level of biological maturation and exposure to relevant experiences. Without these experiences, children are assumed incapable of achieving their highest cognitive ability.
Schemas and Adaptation: Infants are born with reflexive schemas that adapt to the environment and are eventually replaced by constructed schemas.
Children adapt using two alternating, simultaneous processes:
1 Assimilation: The process of transforming the environment so new information can be placed into pre-existing cognitive structures.
2 Accommodation: The process of changing cognitive structures to accept something new from the environment.
Comparison Four stages of development
- Stage 1: Sensorimotor (Infancy): Intelligence is demonstrated through motor activity and physical interactions, without the use of symbols. Object permanence, a form of memory, develops around seven months of age.
- Stage 2: Pre-operational (Toddlers and Early Childhood): Intelligence relies on symbols, maturing language, and imagination. However, a child’s thinking during this stage is highly egocentric, non-logical, and non-reversible.
- Stage 3: Concrete Operational (Elementary to Early Adolescence): Children begin to manipulate symbols logically, provided they relate to concrete objects. Egocentrism diminishes, and children develop operational (reversible) thinking and master various forms of conservation (e.g., volume, mass, and length).
- Stage 4: Formal Operational (Adolescence and Adulthood): Intelligence is demonstrated through the logical use of symbols related to abstract concepts. Piaget noted that many people do not think formally during adulthood; only about 35 percent of high school graduates in industrialised countries obtain formal operations.
Comparison: Jean Piaget vs. neuroplasticity in children
While Piaget’s psychological framework observed how cognitive abilities and behaviours change, modern neuroscience, specifically the concept of neuroplasticity, explains the physical biological mechanisms behind these developmental shifts.
| Feature | Piaget’s theory of Cognitive Development | Neuroplasticity in children |
| Pacing of development | Occurs in four fixed, universal, and hierarchical stages tied to age and maturation. | Occurs continuously, as the brain changes its structure and activities based on interactions; plasticity peaks in early childhood (especially up to age 7). |
| Mechanism of adaptation | Relies on cognitive constructs: assimilation (using existing structures) and accommodation (altering structures). | Relies on physiological changes: forming countless new neural connections (synapses) in response to new knowledge, learning, and observation. |
| Role of experience | Relevant environmental experience is a prerequisite for a child to advance to their highest cognitive ability. | Environmental stimuli and experiences are the direct architects of the brain, physically altering its layout, chemistry, and function. |
| Reversibility/limits | Progression is largely forward-moving, and Piaget suggested abstract ‘formal’ thinking might never be reached by a large percentage of adults. | While neuroplasticity gradually declines into adolescence and adulthood, the brain continues forming new synapses and remains flexible throughout life, essential for ongoing memory and learning. |
In summary, Jean Piaget accurately observed how children’s behaviours and problem-solving abilities change over time. Neuroplasticity explains the biological ‘why’ behind these changes, showing that the brain is not just unlocking preset biological stages, but actively physically moulding itself to its environment.
K J Foxhall