Asked by Elizabeth Anglin on May 07, 2024
Verified
Suppose you can just tell the difference between lifting 100 grams and 102 grams. According to Weber's law, you would need to add __________ grams to tell the new weight from a standard weight of 1,000 grams.
A) 2
B) 10
C) 20
D) 100
Weber's Law
A principle in psychophysics stating that the smallest change in a stimulus that can be detected is a constant proportion of the original stimulus’s intensity.
Grams
A unit of mass in the metric system, used to measure small quantities of substances.
Standard Weight
A term often used to denote average or ideal weight based on height, age, and gender, according to health standards.
- Acquire knowledge on Weber's law and its impact on sensory perception.
- Separate various sensory modalities with the aid of Weber's fraction and the principle of just-noticeable difference.
Verified Answer
TH
Tanner HolmanMay 13, 2024
Final Answer :
C
Explanation :
Weber's law states that the just noticeable difference (JND) is a constant proportion of the original stimulus. Since you can tell the difference between 100 and 102 grams, the JND is 2/100 or 1/50. Applying this ratio to a 1,000-gram weight, the amount needed to notice a difference would be 1/50 of 1,000 grams, which is 20 grams.
Learning Objectives
- Acquire knowledge on Weber's law and its impact on sensory perception.
- Separate various sensory modalities with the aid of Weber's fraction and the principle of just-noticeable difference.