The principle that two stimuli must differ by a constant proportion for their difference to be perceived is known as _________________?
Correct answer: A. Weber's law
- A. Weber's law
- B. the opponent-process theory
- C. feature detection
- D. the difference threshold
Explanation
Weber's law states that the just noticeable difference is a constant proportion of the original stimulus, rather than a fixed physical amount. The difference threshold is the smallest detectable difference itself, not the proportional law describing it.
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