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| | A Science Odyssey: People and Discoveries: Piaget describes stages of cognitive development |
 | | Over the next 60 years, in numerous prestigious academic posts, he continued to talk with children, play with them, ask them questions, and try to understand their thinking. |
 | | Gradually he pieced together a "blueprint" for normal cognitive development in children, and presented findings that were amazing for their simplicity, insight, and endurance to the test of time. |
 | | For example, he found if he showed a baby a toy, but then covered the toy with his hat, the baby would forget about the toy -- if the baby were younger than nine months old. |
| www.pbs.org /wgbh/aso/databank/entries/dh23pi.html (498 words) |
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