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Cognitive Development Neo-Piagetian Research. Neo-Piagetian research New research on sensorimotor stages Object permanence The A-not-B error Immediate and deferred imitation New research on preoperational thought Egocentrism Animism Conservation New research on concrete operations
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Cognitive DevelopmentNeo-Piagetian Research • Neo-Piagetian research • New research on sensorimotor stages • Object permanence • The A-not-B error • Immediate and deferred imitation • New research on preoperational thought • Egocentrism • Animism • Conservation • New research on concrete operations • The sequencing of conservation abilities • New research on formal operations • Does everyone achieve formal operations? • Does formal operations appear earlier than supposed? • Evaluation of Piaget’s theory • Piaget underestimated developing minds • Competence versus performance • Does development occur in stages? • The explanation of intellectual development • The importance of social and cultural influences
New research on object permanenceBaillargeon, Spelke, & Wasserman (1985) • Habituation Display • Test 1 Display • Test 2 Display
The A-not-B Error • A trials: • A location B location • Toy hidden here in front of infant • Infant searches here • B trials: • A location B location • Toy hidden here in front of infant • Infant searches here
The A-not-B ErrorBjork & Cummings (1974) • Spatial orientation versus memory deficit • A trials: • Infant searches here • B trials: • Infant searches here X X
Evidence for formal operations earlier than supposed? • Positive If … then … statements • Premise 1: If Jack washes the dishes, his father will be pleased. • Premise 2: If Jack’s father is pleased, Jack receives a toonie. • Premise 3: Jack washes the dishes. • Conclusion (?): Jack gets a toonie.
Evidence for formal operations earlier than supposed? • Negative If … then … statements • Premise 1: If there is a knife there is a fork. • Premise 2: There is not a knife • Conclusion (?): There is not a fork.
Evaluation of Piaget’s Theory • Piaget’s contributions: • Humans are active in their own development • Young humans think differently than older humans • Impetus for researchers • Challenges to Piaget: • Piaget underestimated the abilities of young minds • Is this a serious criticism? • The competence versus performance issue • Does cognitive development occur in stages? • Stages as “holistic” structures • Horizontal decalage • Piaget’s explanation of intellectual development • Too little attention paid to social and cultural factors