Which term describes the cognitive ability to understand quantities remain the same despite changes in appearance?

• A. Conservation
• B. Adaptation
• C. Schema
• D. Accommodation

Answer: (A)

Conservation describes the ability to understand that quantities stay the same even when their appearance changes. This concept shows up as children learn to ignore perceptual changes and focus on the invariants—like knowing the same amount of liquid in a tall, narrow glass is still the same as in a short, wide one, or that spreading coins into a longer row doesn’t create more coins. As children reach more advanced stages of thinking, they develop reversibility and decentration, which help them recognize that the amount remains constant despite changes in shape, position, or arrangement.

Other terms don’t fit this idea. Adaptation is the general process of adjusting to new information, not specifically about keeping quantity the same when appearances change. Schema refers to a mental framework or plan for understanding the world, not the specific skill of preserving quantity. Accommodation is the process of modifying existing schemes to fit new information, which is part of learning but not the act of recognizing invariant quantities across perceptual changes.