Jessica's furnace broke one winter day. She didn't notice that the temperature had dropped until it was two degrees colder than the usual programmed temperature. What is the psychophysics term for the two-degree difference between the usual temperature and the temperature at which Jessica noticed that it was colder?

Question

Quizplus · Accepted Answer

This is an example of a just noticeable difference, which is the smallest difference between two stimuli that can be detected by a person. In this case, the two-degree difference in temperature was the threshold at which Jessica noticed that it was colder.

Jessica's Furnace Broke One Winter Day