Fig 4. 187 children were tested in two sessions (22 three-year-olds, 50 four-year-olds,27 five-year-olds, 48 aged 6 or 7 and 40 aged 10 and 11) and on each session we classify them as passing/failing the stereotest.

The light-colored bars (green & beige) show the high level of agreement.