Piaget's water-level task[1] is an experiment where participants are shown a bottle with its water level marked and are asked where the water level should be in

Piaget's water-level task[1] is an experiment where participants are shown a bottle with its water level marked and are asked where the water level should be in various rotations of the bottle. Female participants for some reason fail the task at significantly higher rates than male participants, and this test has been replicated all over the world. [1] https://en.wikipedia.org/wiki/Water-level_task https://en.wikipedia.org/wiki/Water-level_task