Piaget's Theory of Cognitive Development

Piaget's theory consists of four stages that individuals must conquer to reach full human intelligence. The ages for these stages may vary.

Development through experiences and interactions using the five senses.
Begins with simple reflexes, transitioning to habit formation.
At approximately 4 months, becomes aware of objects beyond themselves.
Key Milestone: Development of working memory (object permanence).
- Before understanding object permanence, objects seem to disappear when hidden (e.g., a teddy bear).
- Recognition that objects continue to exist even when unseen drives curiosity to explore.
As they develop physical mobility (sitting, crawling, walking), cognitive abilities expand.
Egocentric view predominates, perceiving the world solely from their perspective.

Thinking characterized by symbolic functions and intuitive thoughts.
Engages in fantasy play, believing objects have life and emotions.
Learns that words, images, and gestures are symbols for objects or ideas.
- Example: When drawing a family, emphasis is on representation rather than scale.
Displays a birth of primitive reasoning and a curiosity about the world around them.
Piaget refers to this as "the intuitive age" due to limited understanding of how knowledge is acquired.
Egocentrism persists; they believe others share their views and experiences.

Introduction to logic and concrete cognitive operations.
Develops skills such as sorting and inductive reasoning (generalization from specific examples).
Understands the concept of conservation (e.g., pouring juice into different glass shapes does not change quantity).
Learns to reverse actions (e.g., understanding addition and subtraction relationships).
Increased mental abilities facilitate enhanced participation in school and social interactions.
Begins to recognize that thoughts and feelings can differ from those of others, fostering empathy.

Transition into adolescence brings about formal operational thinking.
Ability to think abstractly about concepts (e.g., love, morality).
Develops deductive reasoning; can form generalizations based on comparisons.
Enhanced cognitive abilities allow for planning and decision-making, even about hypothetical scenarios.
Development of an identity and understanding of morality leads to deeper self-awareness and compassion.
Emergence of egocentric thoughts reappear, manifesting as feelings of being watched by an imaginary audience.

Piaget believed that cognitive development occurs throughout life, though the formal operational stage is the final developmental phase.
His interest began with animals; published his first paper on sparrows at age 11.
In 1920, he began to develop standardized intelligence tests and discovered that younger children think differently than older ones, which influenced his research in child development.