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 for 100 grams is 5 grams (105 - 100), which is 5% of 100 grams. Applying this proportion to 300 grams, a 5% increase would be 15 grams (5% of 300), making the total 315 grams. However, the question's phrasing could imply that any increase that is noticeable (e.g., 305 grams, which is a 5-gram increase but not 5% of 300) might be considered correct, leading to both "315 grams" and "305 grams" being correct interpretations based on different understandings of Weber's law application.

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