Water-level task
Psychology experiment / From Wikipedia, the free encyclopedia
The water-level task is an experiment in developmental and cognitive psychology [1] developed by Jean Piaget.[2]
The experiment attempts to assess the subject's reasoning ability in spatial relations. To do so the subject is shown pictures depicting various shaped bottles with a water level marked, then shown pictures of the bottles tilted on different angles without the level marked, and the subject is asked to mark where the water level would be.