Psychology 2115A/B Lecture Notes - Lecture 4: Psy, Receiver Operating Characteristic

• School: Western University
• Department: Psychology
• Course: Psychology 2115A/B
• Professor: Prof

Document Summary

When people want the most amount of hits, they put beta directly in the middle where the two curves meet example. Motivation: pay-off: rewards for right answer, penalties for wrong, make all the pay-offs different- hit (. 00)/ correct. When people are unsure they will most likely say they heard something because the pay-off is larger for a hit: example: miss. Extra lab work done with doctor: example: find a mate. There is a physical intensity of a stimulus, when you experience this intensity you have some sort of response to it (weak sound, weak reaction) Fechner proposed that there must be a relationship between the strength of the stimulus and the strength of the psychological response. Physical = phy ( ), psychological psy =( ) There is a physical stimulus that gives ride to psychological stimulus and there will be a response. Nominal scale: categorizes two or more things, only tells you if two things are equal.