Euclidean distances between colour loci of turquoise and green in experiments 3 and 4, assuming presence or absence of colour constancy
| . | Test illumination . | Without von Kries . | . | With von Kries . | . | ||
|---|---|---|---|---|---|---|---|
| Training . | . | T . | G . | T . | G . | ||
| T | White | 0 | 0.339 | 0 | 0.214 | ||
| Yellow | 0.338 | 0.517 | 0.166 | 0.243 | |||
| G | White | 0.339 | 0 | 0.214 | 0 | ||
| Yellow | 0.019 | 0.183 | 0.398 | 0.206 | |||
| . | Test illumination . | Without von Kries . | . | With von Kries . | . | ||
|---|---|---|---|---|---|---|---|
| Training . | . | T . | G . | T . | G . | ||
| T | White | 0 | 0.339 | 0 | 0.214 | ||
| Yellow | 0.338 | 0.517 | 0.166 | 0.243 | |||
| G | White | 0.339 | 0 | 0.214 | 0 | ||
| Yellow | 0.019 | 0.183 | 0.398 | 0.206 | |||
The closest distance to the training colour under white illumination is highlighted in bold. In the absence of a von Kries mechanism, turquoise (T),under yellow illumination, has the shortest distance to green (G) under white illumination. With a von Kries mechanism, this is not the case.