Question

In the following scenario, which cognitive skill is the boy demonstrating?

A 7-year-old boy watches his aunt open two eight-ounce cartons of chocolate milk and empty each into two glasses. The glasses are different sizes. The boy’s little sister wants the tall glass of chocolate milk, but the boy does not care which he gets.


reversibility

abstract thinking

conservation

mental superiority

Answer 1

Conservation.

He understands that the amount of milk stays the same despite being poured into different‑shaped glasses — a classic example of Piaget’s conservation (concrete operational) concept.