Imagine you are a soldier carrying a 53 pound rucksack during field duty.One day a friend adds a one ounce letter to your pack.You don't feel a thing,but the next day your friend adds a one pound package to your pack,and you can tell the difference.What psychological principle is this phenomenon based on?

Question

Quizplus · Accepted Answer

Weber's Law describes this phenomenon, stating that the noticeable difference in a stimulus is proportional to the intensity of the initial stimulus. In this case, the small addition of weight (one ounce) to an already heavy load (53 pounds) is not noticeable, but a larger addition (one pound) is perceptible.

Imagine You Are a Soldier Carrying a 53 Pound Rucksack