500
In a classic Piagetian experiment, a researcher pours liquid into a tall, narrow beaker, and transfers it to a short, wide beaker in front of a student, asking the student which beaker holds more liquid. The student says the amount of liquid is the same regardless of which beaker holds it. Of Piaget’s stages, which is the earliest one in which this student is likely to be?
a. Sensorimotor
b. Preoperational
c. Concrete operations
d. Formal operations
e. This is not available
What
C. Concrete operations