They are able to think logically about concrete but not abstract events, for instance the child aged seven years was able to reason that the amount of water in the three containers was equal.

They are able to use a general principle in determining the outcome of a specific event.

Lastly but not the least, they on the other hand are able to move from a specific experiment to a general one.

Basically, conservation is the ability of a person to retain the knowledge they have and most importantly apply it in a different situation.

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