Piaget Vygotsky
Infancy
(0-2 years)

Sensorimotor

Affiliation
Early childhood
(2-7 years)

Pre-operational

Play
Middle childhood
(7-12 years)

Concrete operational

Play
Adolescence
(12-19 years)

Formal operational

Peer group
Adulthood
(19-55 years)



Work
Early old age
(55-70 years)
(19-55 years)



Theorising

Adapted from Butterworth (1994)






Pattern perception












Depth perception




















Still Under Construction

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