If a 5-year-old girl watches an adult pour juice from a tall, thin glass into a short, wide glass, and then she is asked, "Which glass has more juice?" she would typically:
◦ conclude that either the short, wide glass has more juice or that the tall, thin glass has more juice
◦ conclude that since no juice was spilled, the glasses have the same amount of juice
◦ become very confused and ask to see the juice poured again and again
◦ not be able to answer the question because she would be confused about why the adult was asking such an obvious question
Glass Frog
Girl with Down syndrome.
Using a magnifying glass
Forms of primary adult glaucoma
Larval and adult tunicates