What defines difference thresholds in sensory perception?

Multiple choice question for Introduction to Psychology. Select an option, then review the explanation below.

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They represent the point at which a stimulus is initially detected.They indicate the smallest detectable variation in stimulus intensity.They rely on the minimum energy required to activate a sensory receptor.They are quantified using judgmental Normal Differences.They correspond to the absolute level of stimulus intensity.

Explanation

Difference thresholds refer to the minimal change in a stimulus's intensity that can be noticed. Unlike absolute thresholds, which mark the first detection of a stimulus, difference thresholds measure the smallest perceivable difference between two stimulus levels.

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What defines difference thresholds in sensory perception?

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