You are working in a small group in the back of the classroom. Your instructor asks your group to talk more softly. You all speak more quietly, but your instructor comes back 30 seconds later and asks why you have not quieted down. What psychological concepts best explains why your instructor didn't realize that you were already speaking more quietly?

Difference threshold

Explanation:

Difference threshold is the minimum amount that something needs to changes for a person to notice a difference 50% of the time. This concept has been applied for all area of the perception that is touch, sight smell hearing, and vision. These all areas need to be threshold before changing the threshold that a person sensed. In psycho-physical, the smallest change that is detectable changes in the stimulus or we can say that the difference between two stimuli that is noticeable that is defined as the noticeable discrimination is 75 %. It is also called the difference limen or discrimination threshold. It is also called just a noticeable threshold. It is a minimum difference in stimulation that a person can detect 50 times. We can feel the difference threshold as just a noticeable threshold.