Bob has an unknown liquid and must determine what it is. He decides to systematically use a number of tests to determine the correct answer. What stage of cognitive development has Bob reached?
A) sensorimotor
B) preoperational
C) formal operational
D) concrete operational

Question

Quizplus · Accepted Answer

The systematic use of tests to determine the nature of an unknown substance requires formal operational thinking, which is typically developed in adolescence and beyond. Sensorimotor and preoperational stages are focused on developing basic concepts of object permanence and symbolic thought, respectively, while concrete operational thinking involves the ability to problem solve with tangible objects and logical reasoning.

Bob Has an Unknown Liquid and Must Determine What It