🔬 MCAT Exam Prep

Weber law states that:

A The just noticeable difference is a constant proportion of the original stimulus

B Sensory adaptation occurs over time

C Threshold decreases with age

D All senses have the same threshold

✓ Correct Answer: Option A

Weber law: the JND (just noticeable difference) is a constant fraction of the stimulus intensity. ΔI/I = constant.