Chapter 4 Notes – Part 1 (Piaget)

Piaget: Foundational Concepts

Overview of chapter focus (Chapter 4: The Emergence of Thought and Cognitive Development in Infancy and Early Childhood)
- Topics covered: Piaget’s foundational concepts; Sensorimotor and Preoperational stages; attention and memory in infancy/toddlerhood; Baikovsky’s sociocultural perspective; major language milestones in infancy/toddlerhood.
- Prompted reflection: students asked to consider differences in how babies learn vs. toddlers/older children; encouraged to post initial thoughts on how children learn about the world.
Context on Piaget in Part 1
- Key questions for Part 1:
- According to Piaget, how do schemas, assimilation, and accommodation provide the foundation for cognitive development across the lifespan?
- How does thinking become more advanced as infants progress through the sensorimotor stage?
- What are the distinguishing characteristics of thinking during the preoperational stage?
- What are the strengths and weaknesses of Piaget’s theory?
- How have contemporary researchers extended Piaget’s theory?
- Core claim: children are active scientists/explorers who actively construct their world; learning is not passive.
- Schemes (or schemes): mental categories of related events, objects, and knowledge; schemas evolve from physical to functional, conceptual, and abstract as children develop.
- Adaptation mechanisms: assimilation and accommodation
- Assimilation: fitting new experience into existing schemas; e.g., a baby learning to grasp a spoon by fitting it into the existing grasping schema.
- Accommodation: modifying existing schemas in light of new experiences; e.g., adjusting how to grasp/heft a heavier object.
- Equilibrium vs. Disequilibrium
- Equilibrium: a balance between assimilation and accommodation; majority of time in this state.
- Disequilibrium: a conflict between new information and existing concepts; triggers mental growth and transitions to a new stage.
- Disequilibrium occurs three times during development, yielding four qualitatively different cognitive stages.
- Four major stages of Piaget’s cognitive development (approximate ages)
- Sensorimotor period: $0 ext{ to } 2 ext{ years}$
- Preoperational period: $2 ext{ to } 7 ext{ years}$
- Concrete operational period: $7 ext{ to } 11 ext{ years}$
- Formal operational period: $11 ext{ years and up}$
- Note on stage progression: the current focus is infancy/early childhood, but the semester covers all four stages.
Sensorimotor stage ( infancy to around age 2)
- Deliberate means-end behavior emerges around approximately $8 ext{ months}$ .
- Key milestone: object permanence
- Definition: the understanding that an object continues to exist even when it cannot be seen.
- Developmental trajectory: before ~8 months, infants may not search for hidden objects; around this time they begin to search more effectively when objects are hidden.
- Emergence of symbolic use
- Symbols such as words or gestures appear around approximately $18 ext{ to } 24 ext{ months}$ .
- Examples: waving hello/gare goodbye; pretend play (e.g., brushing teeth).
- Anticipation of consequences
- Infants can anticipate the outcomes of actions rather than requiring direct experience; e.g., they track the path of a rolling ball and anticipate where it will go.
Preoperational stage (approx. $2 ext{ to } 7 ext{ years}$ )
- Four major aspects of preoperational thinking:
  1) Egocentrism: difficulty adopting another's perspective; may describe how a mountain appears to themselves as if others see it the same way.
  2) Animism: credits inanimate objects with life or lifelike properties (e.g., sky is sad when it rains; car is hurt after a fender-bender).
  3) Centration: focus on one aspect of a problem while neglecting other relevant aspects; e.g., when shown two pieces of Play-Doh of equal amount, then squishing one to look larger leads to the perception that one has more.
  4) Appearance is reality: assuming objects are exactly as they appear (e.g., a character or object is real because it looks real).
- Example visuals discussed for centration and conservation
- Conservation: the logical ability to determine that quantity remains the same despite changes in container shape or appearance.
- In preoperational thinking, centration interferes with conservation. Examples shown included:
  - Widening a row of coins (same number, different perceived amount).
  - Other visual demonstrations illustrating how appearance can mislead judgments of quantity.
- Illustrative prompts for reflection
- Prompted discussion about a child’s favorite inanimate object (e.g., stuffed animal) believed to be alive; questions about when this belief changes and how it is recognized as non-living.
Piaget’s theory: strengths, weaknesses, and extensions
- Strengths/benefits:
- Emphasizes active discovery and discovery-based learning.
- Provides guidelines for fostering cognitive development (active discovery environments).
- Criticisms and limitations mentioned:
- Underestimates cognitive abilities of infants and young children.
- Overestimates cognitive abilities of adolescents.
- Vague about mechanisms/processes of change.
- Does not adequately account for variability in performance across contexts and individuals.
- Undervalues the influence of sociocultural environment on cognitive development.
- Contemporary extensions to Piaget’s theory
- Naive theories: children are not little scientists who consistently hypothesize and test; instead, they come equipped with foundational, intuitive ideas about how the world works.
  - Naive physics: children are born with basic expectations about physical principles (e.g., objects should move in physically predictable ways).
  - Evidence: infants show surprise when a ball disappears and reappears in a way that defies basic physics; eye-tracking and biometric data indicate early expectations of physical regularities.
  - Naive biology: by around $9 ext{ months}$ , infants understand certain life-like properties in objects and that inanimate objects do not self-propel.
- Four-year-olds’ understanding of living things includes teleological explanations (living things exist for a purpose) and essentialism (an unseen essence gives living things their identity).
- These naive theories are considered expansions or refinements beyond Piaget’s original stages, incorporating early, intuitive knowledge that guides later development.
Summary of Part One (Chapter 4, Part 1: Piaget)
- Covered: schemas, assimilation, accommodation as foundations for cognitive development; progression of thinking across the sensorimotor stage; distinguishing features of the preoperational stage; strengths and weaknesses of Piaget’s theory; how contemporary researchers extended Piaget via naive theories (naive physics and naive biology) and related concepts (teleology and essentialism in early childhood).
- Encouraged ongoing discussion and questions to deepen understanding of cognitive development in infancy and early childhood.
Reflective prompts to engage with the material
- Consider a time when you or someone you know believed a stuffed animal was alive; what signs made you question that belief, and when did you realize it wasn’t alive?
- Share initial thoughts on how babies learn about the world compared with toddlers and older children.
Connection to broader themes
- Links to sensory-motor and symbolic development, early language milestones, and the role of social/cultural context in cognitive growth (to be explored in later sections).

Note on sources and context: The content reflects a lecture-style overview of Piaget’s theory, its key concepts (schemas, assimilation, accommodation, equilibrium/disequilibrium), the four stages with approximate ages, and contemporary extensions (naive physics/biology, teleology, essentialism) as discussed in the chapter introduction and Part 1 of Chapter 4. The sociocultural perspective attributed to Baikovsky is acknowledged as part of the introductory framing, though not elaborated in depth within Part 1.