Question

The stages of development, as proposed by piaget, appear to be _______________. impossible to measure across cultures common only in collectivist cultures common only among middle-class children common only in children from western cultures universal across cultures

Answer 1

I believe the answer is: universal across cultures

This mean that the stages of development that proposed by piaget could also be spotted in other society that had different custom/cultures than united states. From this, we can infer that the development is influenced by biological factors rather than environmental.