S0077 · piaget_primary_texts · registry identity
Stages of mental development (Emile)
Bears on
Canonical propositions this source was matched as evidence for.
How Hirsch uses it
Every occurrence, grouped by book and chapter, with the claim it was linked to support and (where the extraction regenerated one) the underlying warrant.
1996 · The Schools We Need
Jean Piaget's explicit cautions that environment can play a decisive role and that stages are not immutably fixed.
direct Jean Piaget did not support a purely naturalistic approach and believed environment could accelerate cognitive growth.
Warrant (explicit): A theorist's own qualifying statements regarding the flexibility of their developmental stages should take precedence over the more rigid interpretations adopted by their followers.
could fail ifThe possibility that Piaget’s empirical findings on cognitive constraints are more accurate than his own optimistic philosophical qualifications about 'accelerating' growth.
2016 · Why Knowledge Matters
Piaget's observational study of his own children leading to the identification of four stages of mental development.
direct Piaget's description of the first three stages of mental development (sensorimotor, preoperational, and concrete operational) has held up, with the qualification that the stages are not discrete.
Warrant (implicit): Observational patterns identified in a small, non-random sample of children are valid if they align with broad developmental categories that remain observable in general populations.
could fail ifThe lack of discrete boundaries between stages may mean that the 'stages' themselves are arbitrary milestones on a continuous developmental curve rather than biological realities.
Piaget's revision of his own developmental theory, acknowledging the impact of educational content over maturation.
direct Jean Piaget's later revision of his theory of mental development constitutes a repudiation of the romantic principle of naturalistic education.
Warrant (implicit): An author’s admission that environmental 'training' is as impactful as biological 'growth' is equivalent to a total rejection of the romantic belief in natural, child-centered development.
could fail ifPiaget may have intended to propose an interactionist model where training supplements growth, rather than a total 'repudiation' of developmental stages.
2020 · How to Educate a Citizen
Jean Piaget's 1936 theory of four developmental stages (Sensorimotor, Preoperational, Concrete operational, Formal operational).
direct Jean Piaget's theory of four distinct stages of child development is scientifically incorrect.
Warrant (implicit): A developmental theory is scientifically incorrect if its specific predictions about the timing and nature of skill acquisition are consistently refuted by later empirical observation.
could fail ifThe theory might be correct regarding the underlying structure of cognitive maturation even if the specific age-based milestones or tasks Piaget proposed were poorly calibrated.
Endnote numbers seen
Raw book:chapter:endnote references collected during endnote backfill.
swn:4:22wkm:4:4
Raw source_reference strings seen
As they appeared before normalization/consolidation into this source identity.
Jean Piaget (1896–1980)Piaget, Science of Education and the Psychology of the Child, 173