The lowest level of a stimulus needed for the nervous system to detect a change half the time is called the ___________
A) difference threshold
B) just noticeable difference
C) sensory adaptation
D) absolute threshold
Answer: D
Rationale: The absolute threshold is the minimum amount of energy, or quantity of a stimulus required for it to be reliably detected at least 50% of the time it is presented. In contrast, the difference threshold is the smallest detectable difference between stimuli.
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