A certain species of rodent can just tell the difference between plain water and water that contains 1 gram of salt per liter of water (a 1% solution). What does this best illustrate?

Question

Quizplus · Accepted Answer

This best illustrates the difference threshold for this particular rodent. The difference threshold, also known as the just noticeable difference (JND), is the smallest difference between two stimuli that can be detected by an organism. In this case, the rodent can detect the difference between plain water and water with 1 gram of salt per liter, indicating that this difference is within its difference threshold.

A Certain Species of Rodent Can Just Tell the Difference