35.5 MB (9.7 MB compressed)
4323 x 2871 pixels
36.6 x 24.4 cm ⏐ 14.4 x 9.6 in (300dpi)
THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
Editorial use only.
Toddler interacting with a mirror. Humans begin to recognise themselves in a mirror by about 18 months of age. Similar tests in developmental psychology are used on animals to test for self-recognition.
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