Psychology 2015A/B Lecture Notes - Lecture 2: Absolute Threshold, Psychometric Function, Monism

• School: Western University
• Department: Psychology
• Course: Psychology 2015A/B
• Professor: Stephen Lupker

Document Summary

Needs to reach an intensity when you pass threshold and can say yes heard it, yes smell it. 2 methods to measure physical intensity: method of limits: take stimulus around threshold level and present stimulus and then increase intensity little by little. Eventually you will cross over threshold and persons response will change from no to yes. Therefore you can estimate where abouts the absolute threshold is: method of constant stimuli: pick 7-10 different intensity stimuli and present them say 10 times each in random order. Always say yes on same intervals so you will know which points are below and which points are above the absolute threshold level. Error of preservation: perservate with their answer, may continue to just keep saying yes even when gone below threshold level. Robot experiment whether he heard the bell or not (repeated 10 times)