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Discussion

Consider the following statements about the 100 hue test.
1. The error score grades discrimination ability.
2. The pattern of errors indicates the axis of confusion.
3. A perfect score is achieved by every normal observer.

  • A.3 only
  • B.1 only
  • C.All of them
  • D.1 and 2 only

Answer: D

The first two are correct and are why the test is used for selection. The third is not so, since normal observers vary considerably in their scores too. A perfect score is unusual even among normals. The score grades ability rather than presence.

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