Constant Stimuli Discussion

Bonus Assignment 1 Deadline: June 26th 1. Experimenters wanted to examine people’s thresholds for discriminating weights (i.e., the smallest amount by which two weights can di er in order for participants to perceive them as di erent). They chose an object that weighted 100g as the reference/standard weight, and objects with weights ranging from 10g to 250g with a step size of 10g as test/ comparison weights. They measured participant’s discriminability using the method of constant stimuli. – (a) Describe the method of constant stimuli and the procedure of the experiment. – (b) Explain how you would compute the di erence threshold (i.e., the just-noticeable di erence). – (b) The experimenters are also interested in testing whether Weber’s law can be used to ff ff ff ff describe the JNDs for weights. Explain Weber’s law and design an