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Developmental Psychology

Developmental psychology studies how people change across the lifespan — cognitive, social, emotional, and physical development from infancy to old age.

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Scope

It covers cognitive and language development, attachment and socio-emotional development, and lifespan and aging processes.

Sub-topics

Core questions

  • How do children's thinking and abilities develop?
  • How do early relationships shape development?
  • What changes across the whole lifespan?
  • How do nature and nurture interact in development?

Key concepts

  • Cognitive stages
  • Zone of proximal development
  • Attachment
  • Socialization
  • Lifespan development
  • Nature and nurture

Key theories

Cognitive development
Piaget described qualitative stages through which children's thinking develops.
Sociocultural development
Vygotsky stressed the social mediation of development and the zone of proximal development.
Attachment theory
Bowlby theorized the infant-caregiver attachment bond as foundational for socio-emotional development.

History

Developmental psychology grew from Piaget's stage theory and Vygotsky's sociocultural approach, with Bowlby's attachment theory shaping socio-emotional research; it now spans the entire lifespan and developmental neuroscience.

Debates

Stages versus continuity
Whether development proceeds through discrete stages (Piaget) or as continuous change.

Key figures

  • Jean Piaget
  • Lev Vygotsky
  • John Bowlby

Related topics

Seminal works

  • piaget-1952
  • vygotsky-1978
  • bowlby-1969

Frequently asked questions

What is the zone of proximal development?
Vygotsky's concept of the gap between what a learner can do alone and what they can do with guidance — where learning is most effective.

Methods for this concept

Related concepts