| Possible Measurements |
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| 1. | Detection
experiment: |
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| Absolute threshold: When do subjects start |
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| to
perceive the stimulus ? |
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| ® | Limits
of the perceptual system |
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| 2. | Discrimination
experiment: |
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| Difference threshold (just noticeable |
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| difference, JND): how sensitive are subjects |
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| for
changes in the stimulus |
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| ® | Sensitivity
to changes |
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