Because his teacher believes human development is best conceptualized as progressing discontinuously through several stages of thinking, then, his instructor is likely a Piagetian.
A Piagetian is someone who is an believer of the Piaget congnitive theory.
The Piaget theory explains that every human moves through 4 different stages of mental development from Childhood stage.
In conclusion, since his teacher believes human development is best conceptualized as progressing discontinuously through several stages of thinking, then, his instructor is likely a Piagetian.
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