alleryStart learning →A just noticeable difference is measured between:
AA stimulus and silence
BTwo different observers
CTwo separate senses
DTwo stimuli being compared
Answer & Solution
Correct answer: D. Two stimuli being compared
1. The two thresholds answer different questions.
2. The absolute threshold compares a stimulus against nothing at all.
3. The just noticeable difference, or difference threshold, concerns the smallest change that can be detected.
4. That requires two stimuli to compare against each other.
5. Comparing observers would be a question about individual differences rather than about thresholds.
_Source: OpenStax Psychology 2e (CC BY 4.0), Ch 5 'Sensation and Perception', sections 5.1-5.6_
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