Jean Piaget: 1896-1980

  1. Theory of Cognitive Development

  • At odds with behaviorism

  • 1st to say that children think differently than adults

  • Children actively create knowledge as they manipulate/explore the world (opposite of Vygotsky)

  • All children will go through his 4 stages that are based on biology

  • Focused on intellectual development

  • Thought, judgement, & knowledge

  • Critical: method of transition

  • Must complete one stage before moving to the next

  • No skipping/going backwards (unless trauma is present)

  • Each stage is marked by…

  • New abilities

  • More complex understanding


  1. How He Studied Children

  • Observation of his own kids

  • Presented them w/ problems to solve

  • Before Piaget, children were seen as mini adults

  • Now, childhood is a unique & important part of development


  1. Key Aspects of Stages

  • Development MUST precede learning (opposite of Vygotsky)

  • Movement from one stage to another is based on biological maturation (age)

  • Children learn best through discovery learning - they are “little scientists”

  • Cognitive development always follows his stages in order; each stage has distinct ways of thinking


  1. Vocab

  • Schema: Units of knowledge organized by a specific way of thinking - building blocks of knowledge

  • Children view the world through schemas (how we interpret things)

  • Stays the same until challenge to definition

  • Ex: how you picture a dog in your head

  • Innate schemas - Grasping, sucking, and rooting for food

  • Adaptation: Based on biology, used to change and learn cognitively

  • How we do that-

  1. Assimilation: Incorporating new experiences into existing schemas - enlarges the schema

  2. Accomodation: Creating a new schema for new information

  • Equilibration: What moves cognitive development along

  • When assimilation no longer works and we have to use accommodation to change our schemas + balance our understanding

  • Object Permanence: Object exists, even if not seen


  1. Stages

  1. Sensorimotor Stage

  • 0-2 yrs old

  • Child learns by doing

  • Use 5 senses & physical interaction to discover the world

  • Focus on what’s right in front of them

  • Increased mobility = increased cognitive development

  • Key checkpoint: 9 months

  • Children start to develop object permanence & memory

  1. Preoperational

  • 2-7 yrs old

  • Uses language + symbols

  • Become egocentric

  • Think everyone sees the world from their perspective

  • Symbolic play - language=objects

  • Does NOT