Answer:
A)difference threshold, or just noticeable difference
Explanation:
This question is missing its options. The options for this question are:
A)difference threshold, or just noticeable difference.
B)absolute threshold, or average absolute threshold.
C)subliminal threshold.
D)Weber's threshold.
In psychology, the term threshold refers to the strength that a stimulus must reach to be detected by a person.
More so, the term difference threshold (or just noticeable difference) then refers to the minimum difference in stimulation (like lights, sounds, etc) that a person can detect 50 percent of the time.
In this example, there are 2 stimuli (tones) that are slightly different but that more than half the time the group rated them as being the same. We can therefore say that <u>they lack </u><u>difference threshold</u><u> (the minimum difference between them to actually be perceived) and that's why they were rated the same. </u>