Craig likes to add two spoons of sugar to his coffee.When he adds three spoons of sugar to his coffee,he does not notice a difference.Craig also likes to add two spoons of sugar to his milk.In this case,however,he notices a difference when he adds three spoons of sugar.This phenomenon is best explained by
A)the Ponzo illusion.
B)the Stroop effect.
C)Weber's law.
D)Thorndike's law.

Question

Quizplus · Accepted Answer

This phenomenon is best explained by Weber's law, which states that the just noticeable difference (JND) between two stimuli is proportional to the magnitude of the stimuli. In this case, the JND for Craig's coffee is higher than the JND for his milk, causing him to notice a difference when adding an extra spoon of sugar to his milk but not to his coffee.

Craig Likes to Add Two Spoons of Sugar to His