Jean Piaget’s training included heavy doses of both biology and philosophy.
From philosophy came much of the content of his work. Piaget’s goal
(21)---- his career was to use the study of children to answer basic philosophical questions about the nature
and origins of knowledge. His research thus shows a
consistent focus on what have long been central topics in philosophy: the child’s understanding of space, time,
and causality, of number and quantity, of classes and relations, of invariance and change. Undoubtedly, one
reason Piaget’s studies have attracted so much attention up till
now is that they identify such basic and important forms
of knowledge. Another reason is Piaget’s surprising,
and controversial, claim that these basic forms of
knowledge often take a long time to develop