Let's say that you can just distinguish between 100 grams of Swiss cheese (the initial test stimulus) and 105 grams. According to Weber's law, how much cheese would you need to notice a difference if we changed the test stimulus to 300 grams?

Question

Quizplus · Accepted Answer

Weber's law states that the just noticeable difference (JND) is a constant proportion of the original stimulus. In this case, the JND is 5 grams (105 grams - 100 grams). So, if the test stimulus is changed to 300 grams, the JND would be 300 grams * 0.05 = 15 grams. Therefore, you would need to add 15 grams to the test stimulus to notice a difference, which would be 315 grams (300 grams + 15 grams).

Let's Say That You Can Just Distinguish Between 100 Grams