Discussion
Consider the following statements about colour matching experiments.
1. The observer adjusts three primaries to match a test field.
2. The amounts required become the tristimulus values.
3. The observer is asked to name the colour being viewed.
Answer: A
The first two are correct and describe the method. The third describes a naming task, which is quite different and far less reproducible. Matching is a far more reliable task than naming. Reproducibility is what makes the method useful.
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